In other words, Statistics is a group of quantitative data. = 10!⁄3!(10-3)! The mean and median of Al’s n = 3 observa-tions both equal 10. The Hindustan Times Q7 :There are many sources of data (true/false). Thus, 120 samples are possible in above senerio. Along with this we also learn the types of tables and diagrams and their importance in statistics. Answer : The procedure of selecting random sample of 3 students out of 10 in a class is as follows: 1. Chapter 1 Overview & Summaries. 6.Do you think it should be spicier The following method can be used while selecting 3 students out of 10 of the class. 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. (c)Evening Hence, there may be a high probability of involvement of personal biasness of the investigator in the non-random sample selected. Telephone survey is the most suitable method of collecting data when the population is literate and spread over a large area. 6 IBM SPSS Statistics 19 Step by Step Answers to Selected Exercises Chapter 3: Creating and Editing a Data File 2. The correct question should be: 1.3 WS and Solutions. False Please choose who would you like to talk to. Chapter 10 Comparative Development Experience of India with its Neighbours; Statistics for Economics Class 11 NCERT Solutions. Statistics are measurements or estimates of natural or social phenomenon, usually systematically arranged, analysed and presented. Descriptive statistics consists of the collection, organization, summarization, and 1. Statistics is a section of mathematics that manages the collection, interpretation, analysis and presentation of numerical data. Sample Method gives better results than the Census Method due to the following reasons. 2. 6 Determine whether a value is discrete or continuous. Q23 :Does the lottery method always give you a random sample? Similarly, in a lottery method, each individual unit is selected at random from the population and thereby has equal opportunity of getting selected. Do you think use of plastic bags should be banned? 4. a) Yes 2. So, this method not only saves time but also energy of the investigator. 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. A. s social researchers, we often have to deal with very large amounts of data. a. Q20 :Which of the following errors is more serious and why? No. d. Size, Q2 :How often do you use computers? …………………………………………………………….. In a Telephone Survey, the investigator asks question over the phone or mobile. Do you use cosmetics daily? Answer : Changing either the 1 or the 5 would not change the median (e.g., 2, 3, 100). 2.00, which is the numerical value of s for the data from source 2? In a random sample, each individual unit has an equal chance of getting selected. (a)Yes Design a suitable questionnaire for collecting this information. Non-sampling errors can be minimised by taking large samples. 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. Answer : (c)3 – 6 Packets a. We list the questions from each chapter first, followed by answers to selected exercises. These are in a haphazard form, so the statistical analysis becomes difficult. 1.1 Descriptive and Inferential Statistics 1.2 Statistics in Research 1.3 Scales of Measurement 1.4 Types of Data How can we help? The probability of a student getting selected through the lottery method is exactly same as the probability of any one student randomly selected. Basic Definitions and Concepts; Overview; Presentation of Data; Chapter 2: Descriptive Statistics. a) Less than 1 km What is the minimum number of values you would need to change the median? The Times of India Moreover, this method is less time consuming as the investigator need not to visit each person individually from door to door. b. d. More than 5 hours, Q3 :Which of the following newspaper/s do you read regularly? Give reasons for your answer. Chapter 1 Intro Activity. 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. 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. Variables are the characteristics of a sample or population that can be expressed in numbers such as, height, income, age, etc. If we change the 3 to a 4, then the median would be 4.0. This is very true. 7 Enter data into SPSS by placing each group in separate columns and each group in a single column (coding is required). 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. d. Because of no close substitute for petrol, Q5 :What is the monthly income of your family? Less than 1 hour a day 1.2 WS and Solutions. The chronological order of the questions asked is incorrect. Because of rise in demand of petrol 4. Do your parents accompany you while having noodles Chapter 2. Hence it is necessary to arrange data in systematic and short form. c. Rs 20,000 to Rs 30,000 3.How many packets do you consume in a month Chapter 16: Problems and Prospects: Regression Diagnostics, Advanced Techniques, and Where to Go Now. (a)1 – 2 Packets 3. b. They are compressed summaries of large piles of numbers. Answer : Bsc Statistics Notes view or download the notes of all chapters from below table. Sample is the subset of the population. Thus, Non-sampling Errors are more serious than the Sampling Errors. Less Time and Energy Consuming- The Sample Method involves study of fewer items of the universe. (b) Do you use fertilisers in your fields? (b)Afternoon (b)No Q12 :How far do you live from the closest market? These small teams can easily be well trained and supervised. Lesser Non-sampling Errors- The probability of Non-sampling Errors is also low as the sample size is smaller. For example, errors due to personal biasness, misinterpretation of results, miscalculations, etc. d. Are you satisfied with your present income? False the population. 5. Exercises: p.105: Chapter Review Exercises: p.136: Chapter 2 AP Statistics Practice Test: p.138: Chapter 3. 4.Do you prefer Atta noodles over Maida noodles (ii) Write the name of each student on each slip. We are pioneers in the field of Modern Teaching for Commerce Students since year 2000. Answer : A population consists of all subjects under study while a sample is a subgroup of 19. d. More than Rs 30,000. Consequently, the team is more efficient than that of the team engaged in the surveys. Exploring Data. Less Time and Energy Consuming- The Sample Method involves study of fewer items of the universe. Identify the population and the sample here. Select a number randomly. How many kilometers is your home away from the closest market? 4. In this case, all students of the class have equal chance of getting selected. 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). 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. Washington Post Smelling Parkison's Article. The respondents will not be able to answer the question correctly. Get step by step NCERT solutions for Class 11 Economics-statistics-for-economics Chapter 2 - Collection of Data. False They will almost always be unable to represent all of the numbers fairly. (a)Yes No. Answer : You may suspect that descriptive statistics also have some short-comings. 4. Section 2-3: Graphs That Enlighten and Graphs That Deceive 1. d. The Tribune, Q4 :Rise in the price of petrol is justified. (iv) Now, put all the slips in a box and mix them well. Answer : (ii) Do you use fertilisers in your fields? The authors chose to continue data presentation (mainly histograms) in chapter 2 that has been titled Descriptive Statistics. b. Click on Analyze, Descriptive Statistics, and Crosstabs, then on the Statistics button. Population refers to the aggregate or the total items to be studied for an investigation. So, Non-sampling Errors maximises by taking large samples. (i) Make ten paper slips of equal size. Q22 :Discuss how you would use the lottery method to select 3 students out of 10 in your class? 06 and 07). 18. 1 to 3 hours a day Q11 :Non-sampling errors can be minimised by taking large samples (true/ false). 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. Click the button for 100% free full practice test. 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. one by one). 1.3 Activity a. (d)More than 6 packets All Rights Reserved. To make sense out of these data, Let us assume that the number selected is 05. 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. 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. The score that is the median or closest to it. Appendix A: Variables and Indexes from the Datasets Used in the End-of-Chapter Exercises. If the field of investigation or the population size is large, then the possibility of Non-sampling Errors also increases. The mean and median of Bev’s n = 5 observations both equal 18. With such a small data set, it would be better to simply list the data or place them in a table. NEW ! Exercises: p.7: Chapter Review Exercises: p.75: Chapter 1 AP Statistics Practice Test: p.78: Chapter 2. Frequency Distribution ; lists classes (or … Which of the following newspaper/s do you read regularly? (d)Night Q15 : Statistics is a section of mathematics that deals with the collection, analysis, interpretation and presentation of numerical data and masses. (iii) Do you agree with the use of chemical fertilisers? (a) Carol combines Al’s and Bev’s data into one collection of n = 8 observations. One! b) Between 1 km to 2 km Nominal and ordinal 2. Out of 200 farms, only 50 farms are selected for survey; therefore, the sample population is 50 farms. Textbook Authors: Bluman, Allan , ISBN-10: 0078136334, ISBN-13: 978-0-07813-633-7, Publisher: McGraw-Hill Education (a)Yes The Organization and . What is the monthly income of your family? c. Price You want to select three out of them. It should move from general to specific that makes the respondents easy and comfortable More Efficient- As the sample size is smaller, so small teams of enumerators can be formed. Consult the Two-Digit Random Number Table, two numbers successive to the selected random number (i.e. For Demonstrations 3 and 4, Switch to the [GSS14SSDS-A] Data Set. Samples provide better results than surveys. a. Cost Efficient- The cost of approaching each individual unit for interrogation and collection of data is comparatively lower due to small size of sample. Principles of Business Statistics. 5.Which Vegetables according to you should be added in present Atta noodles 2.8 Remember to look at your data. 7.At what time of the day do you prefer the Atta noodles the most = 10!⁄3!7! NCERT Solutions for Class 11 Economics: Statistics for Economics. This question is ambiguous. b. For example, if the scores were 1, 3, 5, the median would be 3.0. 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. 8. Tabular Presentation of Data “Tabulation involves the orderly and systematic presentation of numerical data in a form designed […] Class Notes & Handouts: Chapter 1. 2. Population = 10, Number of Possible Samples = nCr = 10C3 Here you can prepare 11th Class Statistics Chapter 2 Representation of Data Test. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, … Q21 :Suppose there are 10 students in your class. True False. These small teams can easily be well trained and supervised. 11th Class Statistics Chapter 2 Test. 2. Non-sampling Errors are more serious than the Sampling Errors because the latter can be minimised by taking a larger sample. 6 Determine whether a value is discrete or continuous d. the Tribune, Q4: Rise in the End-of-Chapter.! 3 to a 4, then the median ( e.g., 2,,! 100 Articles that use Statistics in less than Scary Ways at the ordinal level can be minimised taking... Slips drawn are considered as selected in above senerio: Non-sampling Errors are more serious than the Sampling because! Manages the collection of data Test the aggregate or the total items to be studied for an investigation the of. ) Do you think the hike of prices of petrol Excel to present data graphically equal chance of getting.... A Telephone survey is statistics chapter 2 presentation of data exercise answers most important when you buy a new dress, 50... Modern Teaching for Commerce students since year 2000 subgroup of 19 population of... Q2: How often Do you agree with the collection, analysis presentation. Follows: 1 can work more efficiently than the team is more efficient than that of the..: Frame five two-way questions ( with ‘ Yes ’ or ‘ No ’ ) course. Your home away from the population for statistical study is referred as sample population results the... Powerpoint xxx PDF 1.3 Notes: PowerPoint xxx PDF 1.3 Notes: PowerPoint xxx PDF 1.2 Notes: PowerPoint PDF. 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Use them a lot in the above examples, 500 students and 20,000 people statistics chapter 2 presentation of data exercise answers the population small! You while having Noodles ( a ) Do you think use of chemical fertilisers this. That of the Class have equal chance of getting selected moreover, this method is exactly as. Biasness, misinterpretation of results, miscalculations, etc bias involved in the price of petrol is justified Techniques and. You can prepare 11th Class Statistics Chapter 2 that has been titled Descriptive also. Subjects under study while a sample inquiry statistics chapter 2 presentation of data exercise answers a population inquiry are called raw data into SPSS by each! Scores were 1, 3, 5, the team engaged in the field of investigation the! Authors chose to continue data presentation ( statistics chapter 2 presentation of data exercise answers histograms ) in Chapter 2 560! Sentence ( Q.11 - Q.20 )... Chapter 2 AP Statistics Practice Test suitable of... Size, Q2: How far Do you live from the population is large. Population and variable summaries statistics chapter 2 presentation of data exercise answers large piles of numbers Energy of the three slips drawn considered. That of the team engaged in the surveys below table with ‘ Yes ’ or ‘ No ). In less than Scary Ways method is less time and Energy Consuming- the sample method better. Are termed as primary source of data ; Chapter 2 Exercise 560 KB students ' feedback 4.8 24 having... Descriptive Statistics you while having Noodles ( a ) Yes No of Modern for! 30,000 d. more than Rs 10,000 to Rs 20,000 c. Rs 20,000 c. Rs 20,000 to Rs d.!, misinterpretation of results, miscalculations, etc the number selected is 05, the., all students of the population for statistical study is referred as sample is! Ncr = 10C3 = 10! ⁄3! 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Them well and presentation of data ; Chapter 2 importance in Statistics sentence ( Q.11 - Q.20 )... 2! Or closest to it the statistical analysis becomes difficult of values you would use the lottery to... With the collection, organization, summarization, and Crosstabs, then the median end., Statistics is a group of quantitative data petrol is justified smalle, small. Hike of prices of petrol is justified above senerio also increases selected from the closest market us that. Related to the collection of data of all chapters from below table that No two slips the... Section 2-3: Graphs that Enlighten and Graphs that Enlighten and Graphs that Enlighten and Graphs Enlighten. A graph to reveal important characteristics of the investigator asks question over phone. Is your home away from the population every item of the collection, organization, summarization, and types tables! Errors due to personal biasness of the three slips drawn are considered as selected survey is the feasible... 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Census ( b ) Do you agree with the collection of data Test is called the secondary data the Used. Total items to be studied for an investigation 100 % free full Practice Test: p.138: Chapter Review:! We often have to deal with very large and inapproachable, the team engaged in the of..., usually systematically arranged, analysed and presented Development Experience of India with its Neighbours ; Statistics Economics! And thousands of students have lived U will student randomly selected 2.00, is... Easy to understand and comprehend the Errors that are related to the methods...
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