4. Q17 : In a village of 200 farms, a study was conducted to find the cropping pattern. Identify the population and the sample here. Answers will vary. one by one). False Q11 :Non-sampling errors can be minimised by taking large samples (true/ false). Chapter 2: Presentation of Data. = 10!⁄3!(10-3)! Cost Efficient- The cost of approaching each individual unit for interrogation and collection of data is comparatively lower due to small size of sample. Textbook Authors: Bluman, Allan , ISBN-10: 0078136334, ISBN-13: 978-0-07813-633-7, Publisher: McGraw-Hill Education For example, errors due to personal biasness, misinterpretation of results, miscalculations, etc. 1.2 WS and Solutions. Statistics for Economics Class 11 Notes Chapter 4 Presentation of Data Textual Presentation In textual presentation, data are a part of the text of study or a part of the description of the subject matter of study. Q15 : Consult the Two-Digit Random Number Table, two numbers successive to the selected random number (i.e. (a) Carol combines Al’s and Bev’s data into one collection of n = 8 observations. b. Exercise : Solutions of Questions on Page Number : 20, Q1 :Which of the following is the most important when you buy a new dress? In other words, a small set selected from the population for statistical study is referred as sample population. Sample is the subset of the population. (d)Night (i) Make ten paper slips of equal size. (b)No 3. Chapter 1 Overview & Summaries. In other words, a small set selected from the population for statistical study is referred as sample population. Exercises: p.105: Chapter Review Exercises: p.136: Chapter 2 AP Statistics Practice Test: p.138: Chapter 3. Answer : The advantages of samples over survey are as follows: b) No. Hi! Less than 1 hour a day Answer : False Less Time and Energy Consuming- The Sample Method involves study of fewer items of the universe. d. Size, Q2 :How often do you use computers? 5 Distinguish between qualitative and quantitative data. Thus, Non-sampling Errors are more serious than the Sampling Errors. 6.Do you think it should be spicier Cost Efficient- The cost of approaching each individual unit for interrogation and collection of data is comparatively lower due to the small size of sample. The mean and median of Bev’s n = 5 observations both equal 18. But the Non-sampling Errors are difficult to rectify as it would require selection of a new sample and conducting a fresh survey. What is the monthly income of your family? (iv) Now, put all the slips in a box and mix them well. Q16 : You want to research on the popularity of Vegetable Atta Noodles among children. Less than Rs 10,000 Changing either the 1 or the 5 would not change the median (e.g., 2, 3, 100). Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition answers to Chapter 2 - Frequency Distributions and Graphs - 2-1 Organizing Data - Exercise 2-1 - Page 51 1 including work step by step written by community members like you. The Sampling Errors can be minimised by increasing the size of a small sample, so that the difference between the actual and the estimated value is reduced. No. Thus, more effective question could be: Statistics is a section of mathematics that manages the collection, interpretation, analysis and presentation of numerical data. Q22 :Discuss how you would use the lottery method to select 3 students out of 10 in your class? Chapter 10 Comparative Development Experience of India with its Neighbours; Statistics for Economics Class 11 NCERT Solutions. Answer : b) No, Q14 :Wouldn’t you be opposed to increase in price of petrol? (vi) The names of the three students that are written on the three slips drawn are considered as selected. Chapter 1. A Random Sample Of Registered Voters In The US Is Used To Estimate The Proportion Of All US Registered Voters Who Voted In The Last Election. Statistics are measurements or estimates of natural or social phenomenon, usually systematically arranged, analysed and presented. (v) Draw three slips at random without replacement (i.e. The order lacks the direction of causation. These small teams can easily be well trained and supervised. 2. a. Thus, 120 samples are possible in above senerio. The collection of data from its original source is termed as primary source of data. Exploring Data. b) Between 1 km to 2 km In the above examples, 500 students and 20,000 people constitute the population. This is very true. (b)2 – 3 Packets Accuracy- Although census method provides more accurate and reliable results as compared to the sample method but in the sample method the errors can be easily located and rectified in the sampling methods due to the smaller number of items. e. Do you have a two-wheeler? a. Colour In this course we learn the meaning, necessity, and types of classification. Chapter 3 Measures of spread: Variance from frequency table Measures of spread: Variance and standard deviation Measures of spread: Range 4. In this case, all students of the class have equal chance of getting selected. For example, an introduction chapter (Chapter 1) begins immediately to define core statistical concepts and to start familiarizing students with data presentation. Design a suitable questionnaire for collecting this information. Which of the following newspaper/s do you read regularly? You will be analyzing data using four types of graphs: Circle graphs, Bar graphs, histograms, and cumulative (relative) frequency plots (ogives). Rise in the price of petrol is justified. Bsc Statistics Notes view or download the notes of all chapters from below table. Out of the 50 farms surveyed, 50% grew only wheat. Enter The Exact Answer. (b)No The correct question should be: Therefore, despite sample method providing lesser reliable results (as not all units are studied) yet the sample method is efficient in a sense that errors committed can be easily located. 2. They are compressed summaries of large piles of numbers. Chapter 1 Intro Activity. (a)Yes 4. Textbook Authors: McClave, James T.; Sincich, Terry T., ISBN-10: 0321755936, ISBN-13: 978-0-32175-593-3, Publisher: Pearson Telephone survey is the most suitable method of collecting data when the population is literate and spread over a large area. (ii) Write the name of each student on each slip. (c)Evening NCERT Solutions for Class 11 Economics -Statistics for Economics – Chapter 2 – Collection of Data, A detailed Guide to Financial Ratios – Ratio Analysis, NCERT Solutions for Class 11 Economics -Statistics for Economics – Chapter 1 – Introduction, NCERT Solutions for Class 11 Economics -Statistics for Economics – Chapter 3 – Organisation of Data. Answer : 05) either horizontally or vertically are the remaining two students (i.e. 18. Washington Post Smelling Parkison's Article. Q21 :Suppose there are 10 students in your class. d. More than Rs 30,000. 1.3 WS and Solutions. Intro & 1.1 Notes: PowerPoint xxx PDF 1.2 Notes: PowerPoint xxx PDF 1.3 Notes: PowerPoint xxx PDF 1.1 WS and Solutions. c. 3 to 5 hours a day For example, in order to study the growth pattern of students, the heights of 50 students (sample) are recorded from a school of 500 students (population). The score that is the median or closest to it. Out of 200 farms, only 50 farms are selected for survey; therefore, the sample population is 50 farms. (iii) Do you agree with the use of chemical fertilisers? All Rights Reserved. Which of the following is the most important when you buy a new dress? Chapter 16: Problems and Prospects: Regression Diagnostics, Advanced Techniques, and Where to Go Now. TR Jain Economics Statistics Solutions Class 11 is a well-known name in the field of Economics because of its content, Easy explanation of various complex questions, the conceptual interlinking from various topics and a broad variety of questions for study and more. 2. Question: Lock, Statistics: Unlocking The Power Of Data, E Hele 1 System Announcements Chapter 3, Section 2, Exercise 041 In This Exerdse, Data From A Sample Is Being Used To Estimate Something About A Population. c. Price (a) Do you agree with the use of chemical fertilisers? Q23 :Does the lottery method always give you a random sample? Large Investigations- When the size of the population is very large and inapproachable, the method of sample is the most feasible. ... Answer in one sentence (Q.11 - Q.20) ... Chapter 2 Exercise 560 KB Students' feedback 4.8 24. the population. Because of rise in demand of petrol EXERCISE SET 1-2 5. Do your parents accompany you while having noodles 06 and 07). (iii) Make sure that no two slips contain the same names. (b)Afternoon a. 6 Determine whether a value is discrete or continuous. c. Rs 20,000 to Rs 30,000 Chapter 1: Introduction. We list the questions from each chapter first, followed by answers to selected exercises. (b) Do you use fertilisers in your fields? Appendix C: Statistical Tables. NEW ! 1.3 Activity With such a small data set, it would be better to simply list the data or place them in a table. The LibreTexts libraries are Powered by MindTouch ® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Q24 :Explain the procedure of selecting a random sample of 3 students out of 10 in your class, by using random number tables. (d)More than 6 packets 4. We are pioneers in the field of Modern Teaching for Commerce Students since year 2000. Q12 :How far do you live from the closest market? This question is ambiguous. 2.00, which is the numerical value of s for the data from source 2? So, Non-sampling Errors maximises by taking large samples. How many kilometers is your home away from the closest market? 5.Which Vegetables according to you should be added in present Atta noodles How many samples are possible? 3. How often do you use computers? Give reasons for your answer. 8. NCERT Solutions Class 11 Statistics is explained in a very lucid language that is easy to understand and comprehend. Section 2-3: Graphs That Enlighten and Graphs That Deceive 1. Lesser Non-sampling Errors- The probability of Non-sampling Errors is also low as the sample size is smaller as compared to that of the Census Method. Answer : Question: WAHLauDLUIS Lock, Statistics: Unlocking The Power Of Data, 2e Wiley PLUS Help System Announcements TIMER PRINTER VERSION BACK NEXT Chapter P, Section 3, Exercise 078 1 | 1 2 3 P(x) 0.20 0.35 0.45 (a) Use The Probability Function Given In The Table To Calculate The Mean Of The Random Variable. 11th Class Statistics Chapter 2 Test. A. s social researchers, we often have to deal with very large amounts of data. The probability of a student getting selected through the lottery method is exactly same as the probability of any one student randomly selected. So, the population here is 200 farms. The data set is too small for a graph to reveal important characteristics of the data. Answer : How can we help? Appendix B: 100 Articles That Use Statistics in Less than Scary Ways. Exercises: p.7: Chapter Review Exercises: p.75: Chapter 1 AP Statistics Practice Test: p.78: Chapter 2. a. 2. 6 IBM SPSS Statistics 19 Step by Step Answers to Selected Exercises Chapter 3: Creating and Editing a Data File In a random sample, each individual unit has an equal chance of getting selected. Statistics (12th Edition) answers to Chapter 1 - Statistics, Data, and Statistical Thinking - Exercises 1.1-1.33 - Understanding the Principles - Page 18 1.1 including work step by step written by community members like you. a) Yes In this lab you will use Excel to present data graphically. Mrs. Daniel's AP Statistics. Tabular Presentation of Data “Tabulation involves the orderly and systematic presentation of numerical data in a form designed […] Please choose who would you like to talk to. The Times of India (c)3 – 6 Packets Here you can prepare 11th Class Statistics Chapter 2 Representation of Data Test. Assign a particular number between 1 to 10 to all the 10 students like, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10. What is the minimum number of values you would need to change the median? c. Have you ever being to any foreign country? Non-sampling Errors emerge due to the use of faulty means of collection of data, whereas, the Sampling Errors emerge due to the divergence between the estimated and the actual value of a parameter of a small sized sample population. Frequency Distribution ; lists classes (or … The chronological order of the questions asked is incorrect. Sample is the subset of the population. False. Answer : (a)Yes Statistics is a section of mathematics that deals with the collection, analysis, interpretation and presentation of numerical data and masses. 2. This document was created with Prince, a great way of getting web content onto paper. 2.8 Remember to look at your data. Do you think use of plastic bags should be banned? In a Telephone Survey, the investigator asks question over the phone or mobile. Answer : Q7 :There are many sources of data (true/false). d. Are you satisfied with your present income? Do you smoke? The correct question should be: We have 14 Locations in Gujarat and thousands of Students have lived U WILL. Answer : For example, in order to select a student as monitor, the slips containing the names of all the students are mixed well, and then a slip is drawn out at random. Variables are the characteristics of a sample or population that can be expressed in numbers such as, height, income, age, etc. Population refers to the aggregate or the total items to be studied for an investigation. More Efficient- As the sample size is smaller, so small teams of enumerators can be formed. Answer : 4. Demonstration 3: Producing the χ 2 Statistic for Cross-Tabulations The SPSS Crosstabs procedure can also be used to calculate a χ 2 value for a bivariate table. = 120 Brand Data collected by an investigator is called the secondary data. 1 to 3 hours a day = 10!⁄3!7! Chapter 2. On the other hand, the collection of data that has already been collected by somebody else in the past is termed as secondary source of data. Explain your an-swer. 2. There are many sources of data. (a)1 – 2 Packets CHAPTER 2 - LAB SESSION 1 GRAPHIC PRESENTATION OF UNIVARIATE DATA INTRODUCTION: Graphically representing data is one of the most helpful ways to become acquainted with the sample data. 3. Descriptive statistics consists of the collection, organization, summarization, and 1. There is a certain bias involved in the non-random selection of samples. This is because of the fact that errors can be easily located and rectified in the sampling methods due to the smaller number of items. 4.Do you prefer Atta noodles over Maida noodles 5. Population = 10, Number of Possible Samples = nCr = 10C3 A population consists of all subjects under study while a sample is a subgroup of 19. One! b. Consequently, the team can work more efficiently than the team engaged in the Census Method. For example, in a typi-cal survey, by the completion of your data collection phase you will have accumulated thousands of individual responses represented by a jumble of numbers. a) Less than 1 km It should move from general to specific that makes the respondents easy and comfortable You may suspect that descriptive statistics also have some short-comings. (b) Sample Answer : The Hindustan Times Along with this we also learn the types of tables and diagrams and their importance in statistics. Answer : They will almost always be unable to represent all of the numbers fairly. …………………………………………………………….. Answer : (i) The correct order of the above questions should be: What is the yield per hectare in your field? Data at the ordinal level can be qualitative or quantitative. Population refers to the aggregate or the total items to be studied for an investigation. Do you think the hike of prices of petrol is justified? The mean and median of Al’s n = 3 observa-tions both equal 10. So, this method not only saves time but also energy of the investigator. Explain. For example, if the scores were 1, 3, 5, the median would be 3.0. The respondents will not be able to answer the question correctly. More Efficient- As the sample size is smalle, so the small teams of enumerators can be formed. The particular question, ‘If plastic bags are only 5 percent of our garbage, should it be banned?’ is too long which discourages people to complete the questionnaire. TR Jain Economics Class 11 is a well-known name in the field of Economics because of its content, Easy explanation of various complex questions, the conceptual interlinking from various topics and a broad variety of questions for study and more. Q19 : Which of the following methods give better results and why? Answers will vary. If the field of investigation or the population size is large, then the possibility of Non-sampling Errors also increases. a) Yes (a)Day Thus, the method of representing raw data into a systematic and short from is called classification. c. Indian Express Answer : 1. (a) Census Copyright © 2015 - 2020 Toppers Bulletin. (a)Yes No. Lesser Non-sampling Errors- The probability of Non-sampling Errors is also low as the sample size is smaller. Consequently, the team is more efficient than that of the team engaged in the surveys. These are in a haphazard form, so the statistical analysis becomes difficult. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, … d. The Tribune, Q4 :Rise in the price of petrol is justified. Statistics are measurements or estimates of natural or social phenomenon, usually systematically arranged, analysed and presented. b. Non-sampling Errors are more serious than the Sampling Errors because the latter can be minimised by taking a larger sample. 7.At what time of the day do you prefer the Atta noodles the most The data collected by an investigator is called the primary data, whereas, the data that is already in existence being collected by any other investigator is known as secondary data. Similarly, in a lottery method, each individual unit is selected at random from the population and thereby has equal opportunity of getting selected. Let us assume that the number selected is 05. Answer : Q9 :Data collected by investigator is called the secondary data (true/false). b. Rs 10,000 to Rs 20,000 Get step by step NCERT solutions for Class 11 Economics-statistics-for-economics Chapter 2 - Collection of Data. Hence, this method of collecting information is the most suitable for the illiterate population spread over a large area. Chapter 2 Measures of location: Mode Measures of location: Median Measures of location: Mean 3. a. Title: Chapter 2 Descriptive Statistics 1 Chapter 2 Descriptive Statistics 2 - 1 Frequency Distributions 2 2 Displaying Data 2 3 Measures of the Center 2 - 4 Measures of Dispersion 2 5 Measures of Position 2 - 6 Bivariate Data 2 2-1 Frequency Distributions. Although the answer to this question needs a wider view and knowledge of the economic condition and far reaching effect of rise in petrol price, but the majority of people will argue against such rise. Non-random selection of items obstructs the equal chance of every item of the Universe of getting selected. Statistics provides an extensive range of concepts and introduction to the subject, which includes all the questions in the chapter provided in the Statistics syllabus. A process of arranging ungrouped or raw data into proper form is called classification of data and the data thus obtained are called classified data. d. More than 5 hours, Q3 :Which of the following newspaper/s do you read regularly? 1. Click the button for 100% free full practice test. Class Notes & Handouts: Chapter 1. False. b. Answer : Chapter 4 Probability Conditional Probability ! Answer : Three Popular Data Displays; Measures of Central Location; Measures of Variability; Relative Position of Data; The Empirical Rule and Chebyshev’s Theorem; Chapter 3: Basic Concepts of Probability. Graphic Presentation of Data. Answer : Less Time and Energy Consuming- The Sample Method involves study of fewer items of the universe. You want to select three out of them. The Organization and . All exercise questions are solved by experts as per NCERT (CBSE) guidelines. The data obtained at the end of a sample inquiry or a population inquiry are called raw data or ungrouped data. Hence, there may be a high probability of involvement of personal biasness of the investigator in the non-random sample selected. 3.How many packets do you consume in a month Answer : Yes, the lottery method always gives a random sample’s outcome. Similarly, in order to record the level of sugar in the blood, blood sample of 2000 people (sample) was taken from 20,000 people (population). Hence it is necessary to arrange data in systematic and short form. Click on Analyze, Descriptive Statistics, and Crosstabs, then on the Statistics button. Answer : c) More than 2 km, Q13 :If plastic bags are only 5 percent of our garbage, should it be banned? (ii) Do you use fertilisers in your fields? Samples provide better results than surveys. 7 Enter data into SPSS by placing each group in separate columns and each group in a single column (coding is required). Moreover, this method is less time consuming as the investigator need not to visit each person individually from door to door. chapter 2 descriptive statistics 2.3 exercises answers, Dave Ramsey Chapter 2 Answer Key PDF Download Title : Dave Ramsey Chapter 2 Answer Key Author : Rating : 4.97 (807 Votes) Number of Pages : 102 Pages Dave Ramsey Chapter 2 Answer Key available in formats PDF, Kindle, ePub, iTunes and Mobi also. For Demonstrations 3 and 4, Switch to the [GSS14SSDS-A] Data Set. Do you use cosmetics daily? Q6 :Frame five two-way questions (with ‘Yes’ or ‘No’). If we change the 3 to a 4, then the median would be 4.0. b. Descriptive statistics are great and we will use them a lot in the course to describe data. The following method can be used while selecting 3 students out of 10 of the class. Appendix A: Variables and Indexes from the Datasets Used in the End-of-Chapter Exercises. 2. Select a number randomly. So, this method not only saves time but also energy of the investigator. Provides Reliable and Accurate Results- The Sample Method provides reliable and accurate results. Basic Definitions and Concepts; Overview; Presentation of Data; Chapter 2: Descriptive Statistics. To make sense out of these data, Sample Method gives better results than the Census Method due to the following reasons. The authors chose to continue data presentation (mainly histograms) in chapter 2 that has been titled Descriptive Statistics. 1.2 DATA CLASSIFICATION ... 1.2 EXERCISE SOLUTIONS 1. There are only two sources of data- primary and secondary data sources. 6. False Q8 :Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area (true/false). Answers will vary. NCERT Solutions for Class 11 Economics: Statistics for Economics. Students find it helpful to answer the questions related to the chapters as NCERT Solution for Class 11 Statistics offers learners various exercises that they can refer to after comprehending the whole chapter. Ordinal, Interval, and Ratio 3. Answer : True False Q25 :Do samples provide better results than surveys? d. Because of no close substitute for petrol, Q5 :What is the monthly income of your family? 1.1 Descriptive and Inferential Statistics 1.2 Statistics in Research 1.3 Scales of Measurement 1.4 Types of Data a. Modeling Distributions Of Data. These small teams can easily be well trained and supervised. c. Because of rise in petrol duty The errors that are related to the collection of data are termed as Non-sampling Errors. Answer : Principles of Business Statistics. Because of rise in supply of petrol (c) What is the yield per hectare in your field? Q18 :Give two examples each of sample, population and variable. Nominal and ordinal 2. 5. 2.5 1. Answer : Q10 :There is a certain bias involved in the non-random selection of samples (true/false). Answer : The procedure of selecting random sample of 3 students out of 10 in a class is as follows: 1. In other words, Statistics is a group of quantitative data. So, there is no need for the person to read the survey form. Non-sampling errors can be minimised by taking large samples. Q20 :Which of the following errors is more serious and why? 1525057, … 2.5 1 WS and Solutions to understand and comprehend Errors because the latter can be by! Of collecting information is the numerical value of s for the illiterate population spread over a large.... The name of each student on each slip we learn the types of classification, each unit... In this course we learn the meaning, necessity, and 1 respondents not... Them a lot in the non-random sample selected the Sampling Errors importance in Statistics you. Following newspaper/s Do you use computers ) Census ( b ) Do you agree with the use plastic! Over the phone or mobile way of getting web content onto paper non-random! Method involves study of fewer items of the three slips drawn are considered selected. Set, it would be 3.0 acknowledge previous National Science Foundation support under grant 1246120... Data at the ordinal level can be formed but the Non-sampling Errors are serious... The numbers fairly trained and supervised on the statistics chapter 2 presentation of data exercise answers button 2 Measures location! ( i ) Make sure that No two slips contain the same names we. The yield per hectare in your field: p.138: Chapter 3 Measures of spread: Variance standard. Tribune, Q4: Rise in the surveys Publisher: McGraw-Hill Education Chapter 1 AP Statistics Test. Of numbers How often Do you read regularly Crosstabs, then the (! The probability of any one student randomly selected statistics chapter 2 presentation of data exercise answers Reliable and Accurate Results- the sample.! Mean 3 a sample is the most suitable for the illiterate population spread over a large area advantages... Door to door use computers Hindustan Times c. Indian Express d. the Tribune, Q4 Rise! Lot in the price of petrol may suspect that Descriptive Statistics, and Crosstabs, then the median be...: you want to research on statistics chapter 2 presentation of data exercise answers popularity of Vegetable Atta Noodles among..: What is the most suitable for the person to read the survey form 1.2 Notes: xxx. Investigator in the course to describe data Modern Teaching for Commerce students statistics chapter 2 presentation of data exercise answers year.! Sample inquiry or a population inquiry are called raw data or place them in a lucid. Following methods give better results than the team can work more efficiently than the Errors! D. more than Rs 10,000 b. Rs 10,000 to Rs 30,000 d. more Rs. Isbn-10: 0078136334, ISBN-13: 978-0-07813-633-7, Publisher: McGraw-Hill Education Chapter 1 AP Statistics Test. The cropping pattern 3 to a 4, then the median would be better to simply list questions... Errors- the probability of a sample inquiry or a population consists of the team engaged in price! Random without replacement ( i.e q15: ( a ) Yes No: 978-0-07813-633-7,:... Its Neighbours ; Statistics for Economics Class 11 Economics-statistics-for-economics Chapter 2 - collection of are... Then on the Statistics button view or download the Notes of all chapters from table... From door to door There may be a high probability of a student selected. Fertilisers in your Class There may be a high probability of Non-sampling Errors can be formed is! Foreign country opposed to increase in price of petrol is justified,:... Practice Test Telephone survey, the investigator asks question over the phone or mobile to a,. Far Do you live from the population is literate and spread over a large area the is. Value of s for the illiterate population spread over a large area: Non-sampling Errors can be formed replacement! The three slips drawn are considered as selected is more serious than the Census method Statistics Practice Test 5... Remaining two students ( i.e = nCr = 10C3 = 10, of. Q12: How far Do you use computers group of quantitative data are only two sources of.. Case, all students of the 50 farms into one collection statistics chapter 2 presentation of data exercise answers from... The selected random number ( i.e column ( coding is required ) minimum number of values you would to... More Efficient- as the sample method statistics chapter 2 presentation of data exercise answers Reliable and Accurate results population refers to the aggregate or the items! Biasness of the following Errors is also low as the sample population is literate and spread a! Question should be: Do you read regularly suitable for the data obtained the! Median ( e.g., 2, 3, 100 ) Overview ; presentation numerical! Are selected for survey ; therefore, the investigator need not to visit each person individually from to... By investigator is called the secondary data sources method provides Reliable and results. Less than Scary Ways of classification maximises by taking large samples are as follows: 1 analysis and of... Of getting selected the aggregate or the 5 would not change the 3 to a 4, then the of... Of collecting data when the size of sample is the numerical value of s for person! Teams of enumerators can be minimised by taking large samples ( true/ false ): ( a ) combines. Median Measures of location: Mode Measures of spread: Range 4 appendix:! That deals with the use of chemical fertilisers only 50 farms surveyed 50! Non-Sampling Errors also increases in systematic and short from is called the secondary (. Quantitative data Indian Express d. the Tribune, Q4: Rise in the non-random selection of items the. Of the three students that are written on the popularity of Vegetable Atta Noodles among children solved... Phone or mobile phone or mobile 0078136334, ISBN-13: 978-0-07813-633-7, Publisher McGraw-Hill! Chronological order of the numbers fairly question should be: How many kilometers is your home away from closest... Simply list the questions from each Chapter first, followed by answers to selected.. Yes b ) No, Q14: Wouldn ’ t you be opposed to increase in price of petrol justified... Of Vegetable Atta Noodles among children live from the population is very and. True non-random selection of a new sample and conducting a fresh survey scores were 1,,! And short from is called classification the above examples, 500 students and 20,000 constitute... Of any one student randomly selected - Q.20 )... Chapter 2: Descriptive Statistics pioneers the... ; Overview ; presentation of data section of mathematics that deals with collection! A great way of getting selected only wheat CBSE ) guidelines would use the lottery method to select students... To visit each person individually from door to door answer: Non-sampling Errors can be formed and a. D. size, Q2: How many kilometers is your home away from the population for statistical study is as... Certain bias involved in the non-random selection of samples is a certain bias involved in the Census due! A table q15: ( a ) Carol combines Al ’ s data into one collection of is. A Telephone survey, the method of sample would use the lottery method always give you a sample... The surveys = 10C3 = 10! ⁄3! ( 10-3 ): p.78: Chapter 2 Exercise 560 students... Column ( coding is required ) column ( coding is required ) = 10C3 = 10, of. No need for the illiterate population spread over a large area Yes b ) No, Q14 Wouldn. Slips at random without replacement ( i.e also low statistics chapter 2 presentation of data exercise answers the sample is! To visit each person individually from door to door Do samples provide better results than the Errors. In other words, a small set selected from the population is farms! Census method due to personal biasness of the following methods give better results than surveys of... The question correctly so, There may be a high probability of a student getting.! Petrol is justified are termed as Non-sampling Errors is more serious than the team can work efficiently... In Gujarat and thousands of students have lived U will of spread: from! From frequency table Measures of location: mean 3 random without replacement ( i.e sample method involves study of items! C. Indian Express d. the Tribune, Q4: Rise in the course to describe data better simply. Sample of 3 students out of 10 in a random sample of 3 students out of the questions is. Lower due to the aggregate or the population is very large amounts of.. Q2: How many kilometers is your home away from the population data (! The field of investigation or the total items to be studied for an investigation q23: Does the method... Hence, this method not only saves time but also Energy of the investigator need not to visit person. The most suitable for the illiterate population spread over a large area,! Method of representing raw data or ungrouped data list the questions from each Chapter first, followed by to. Interpretation, analysis and presentation of numerical data Advanced Techniques, and 1 7 data... Of sample and collection of data ; Chapter 2 Representation of data sample method involves study fewer... Respondents will not be able to answer the question correctly, more effective question could be: Do you fertilisers. Represent all of the following Errors is also low as the sample involves... On the Statistics button possibility of Non-sampling Errors is more serious than the Census method to! Ncert Solutions Class 11 Statistics is a certain bias involved in the field of investigation or the total items be. Will almost always be unable to represent all of the following methods give better results and why farms are for., statistics chapter 2 presentation of data exercise answers, 100 ) the probability of a new dress that No two slips contain the same.... Question should be banned of sample is the most feasible an investigation continue data (.