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. Click the button for 100% free full practice test. Class Notes & Handouts: Chapter 1. So, this method not only saves time but also energy of the investigator. b. Hi! True Population = 10, Number of Possible Samples = nCr = 10C3 These small teams can easily be well trained and supervised. Non-random selection of items obstructs the equal chance of every item of the Universe of getting selected. 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. 1.1 Descriptive and Inferential Statistics 1.2 Statistics in Research 1.3 Scales of Measurement 1.4 Types of Data No. 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. 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. The advantages of samples over survey are as follows: Answer : False. The Hindustan Times Variables are the characteristics of a sample or population that can be expressed in numbers such as, height, income, age, etc. 2. Sample is the subset of the population. Washington Post Smelling Parkison's Article. Q23 :Does the lottery method always give you a random sample? False Hence it is necessary to arrange data in systematic and short form. In the above examples, 500 students and 20,000 people constitute the population. 2.8 Remember to look at your data. Chapter 1 Overview & Summaries. 3. 3. 4. 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. We are pioneers in the field of Modern Teaching for Commerce Students since year 2000. 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. 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. Statistics is a section of mathematics that manages the collection, interpretation, analysis and presentation of numerical data. (b)2 – 3 Packets c. Price Hence, there may be a high probability of involvement of personal biasness of the investigator in the non-random sample selected. (b)No Identify the population and the sample here. One! Because of rise in demand of petrol How many kilometers is your home away from the closest market? Frequency Distribution ; lists classes (or … 6 Determine whether a value is discrete or continuous. Q10 :There is a certain bias involved in the non-random selection of samples (true/false). Chapter 2 Measures of location: Mode Measures of location: Median Measures of location: Mean 3. Statistics is a section of mathematics that deals with the collection, analysis, interpretation and presentation of numerical data and masses. Q25 :Do samples provide better results than surveys? Q7 :There are many sources of data (true/false). If we change the 3 to a 4, then the median would be 4.0. c. Rs 20,000 to Rs 30,000 Moreover, this method is less time consuming as the investigator need not to visit each person individually from door to door. Q20 :Which of the following errors is more serious and why? a) Yes Do you use cosmetics daily? This is very true. In a random sample, each individual unit has an equal chance of getting selected. Q9 :Data collected by investigator is called the secondary data (true/false). d. The Tribune, Q4 :Rise in the price of petrol is justified. With such a small data set, it would be better to simply list the data or place them in a table. a. Colour Mrs. Daniel's AP Statistics. 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. a. All exercise questions are solved by experts as per NCERT (CBSE) guidelines. = 120 (c) What is the yield per hectare in your field? Which of the following is the most important when you buy a new dress? Q18 :Give two examples each of sample, population and variable. Changing either the 1 or the 5 would not change the median (e.g., 2, 3, 100). 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. There are many sources of data. 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. Q17 : In a village of 200 farms, a study was conducted to find the cropping pattern. b) No. 1.2 DATA CLASSIFICATION ... 1.2 EXERCISE SOLUTIONS 1. Consequently, the team is more efficient than that of the team engaged in the surveys. In other words, a small set selected from the population for statistical study is referred as sample population. Chapter 4 Probability Conditional Probability ! 1.2 WS and Solutions. (b)No 6.Do you think it should be spicier 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). In this case, all students of the class have equal chance of getting selected. Answers will vary. 2. The mean and median of Al’s n = 3 observa-tions both equal 10. (d)Night Answers will vary. To make sense out of these data, 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. c. Because of rise in petrol duty b. Population refers to the aggregate or the total items to be studied for an investigation. Answer : Let us assume that the number selected is 05. How often do you use computers? 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. Chapter 1 Intro Activity. (b)Afternoon Less than Rs 10,000 Q8 :Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area (true/false). 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). 5.Which Vegetables according to you should be added in present Atta noodles c) More than 2 km, Q13 :If plastic bags are only 5 percent of our garbage, should it be banned? 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. Get step by step NCERT solutions for Class 11 Economics-statistics-for-economics Chapter 2 - Collection of Data. a. b. a. Appendix A: Variables and Indexes from the Datasets Used in the End-of-Chapter Exercises. You want to select three out of them. Q19 : Which of the following methods give better results and why? They will almost always be unable to represent all of the numbers fairly. Answer : 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. Please choose who would you like to talk to. The authors chose to continue data presentation (mainly histograms) in chapter 2 that has been titled Descriptive Statistics. Design a suitable questionnaire for collecting this information. b) Between 1 km to 2 km Along with this we also learn the types of tables and diagrams and their importance in statistics. 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. The chronological order of the questions asked is incorrect. Chapter 2. Samples provide better results than surveys. Answer : The errors that are related to the collection of data are termed as Non-sampling Errors. (d)More than 6 packets the population. A population consists of all subjects under study while a sample is a subgroup of 19. 2.5 1. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, … = 10!⁄3!7! Q21 :Suppose there are 10 students in your class. These small teams can easily be well trained and supervised. Brand What is the monthly income of your family? Assign a particular number between 1 to 10 to all the 10 students like, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10. Answer : Q15 : It should move from general to specific that makes the respondents easy and comfortable d. More than 5 hours, Q3 :Which of the following newspaper/s do you read regularly? (i) The correct order of the above questions should be: What is the yield per hectare in your field? 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. (a)1 – 2 Packets Consequently, the team can work more efficiently than the team engaged in the Census Method. Chapter 1. 2. 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. Less Time and Energy Consuming- The Sample Method involves study of fewer items of the universe. Telephone survey is the most suitable method of collecting data when the population is literate and spread over a large area. Textbook Authors: Bluman, Allan , ISBN-10: 0078136334, ISBN-13: 978-0-07813-633-7, Publisher: McGraw-Hill Education More Efficient- As the sample size is smalle, so the small teams of enumerators can be formed. Thus, Non-sampling Errors are more serious than the Sampling Errors. ... Answer in one sentence (Q.11 - Q.20) ... Chapter 2 Exercise 560 KB Students' feedback 4.8 24. 3. 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. Answer : Non-sampling Errors are more serious than the Sampling Errors because the latter can be minimised by taking a larger sample. Copyright © 2015 - 2020 Toppers Bulletin. But the Non-sampling Errors are difficult to rectify as it would require selection of a new sample and conducting a fresh survey. Explain your an-swer. Ordinal, Interval, and Ratio 3. 1.3 Activity The Organization and . Answer : 1. The correct question should be: Large Investigations- When the size of the population is very large and inapproachable, the method of sample is the most feasible. In other words, a small set selected from the population for statistical study is referred as sample population. False Answer : 5 Distinguish between qualitative and quantitative data. c. Indian Express The correct question should be: c. Have you ever being to any foreign country? Do you smoke? Here you can prepare 11th Class Statistics Chapter 2 Representation of Data Test. c. 3 to 5 hours a day (c)Evening 18. 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. (a) Do you agree with the use of chemical fertilisers? The collection of data from its original source is termed as primary source of data. There are only two sources of data- primary and secondary data sources. Population refers to the aggregate or the total items to be studied for an investigation. All Rights Reserved. (a)Yes (a)Yes Answer : Tabular Presentation of Data “Tabulation involves the orderly and systematic presentation of numerical data in a form designed […] This document was created with Prince, a great way of getting web content onto paper. Answer : Give reasons for your answer. False Exercises: p.105: Chapter Review Exercises: p.136: Chapter 2 AP Statistics Practice Test: p.138: Chapter 3. 1 to 3 hours a day 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. NCERT Solutions for Class 11 Economics: Statistics for Economics. Descriptive statistics are great and we will use them a lot in the course to describe data. Modeling Distributions Of Data. Enter The Exact Answer. Data collected by an investigator is called the secondary data. Principles of Business Statistics. They are compressed summaries of large piles of numbers. Answer : We have 14 Locations in Gujarat and thousands of Students have lived U WILL. b) No, Q14 :Wouldn’t you be opposed to increase in price of petrol? Rise in the price of petrol is justified. So, the population here is 200 farms. 4. The order lacks the direction of causation. These are in a haphazard form, so the statistical analysis becomes difficult. 2.00, which is the numerical value of s for the data from source 2? (ii) Do you use fertilisers in your fields? Out of 200 farms, only 50 farms are selected for survey; therefore, the sample population is 50 farms. The score that is the median or closest to it. Textbook Authors: McClave, James T.; Sincich, Terry T., ISBN-10: 0321755936, ISBN-13: 978-0-32175-593-3, Publisher: Pearson Chapter 10 Comparative Development Experience of India with its Neighbours; Statistics for Economics Class 11 NCERT Solutions. 6. Answer : Yes, the lottery method always gives a random sample’s outcome. a) Yes (a) Carol combines Al’s and Bev’s data into one collection of n = 8 observations. (a)Day In this lab you will use Excel to present data graphically. 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. (vi) The names of the three students that are written on the three slips drawn are considered as selected. Do you think use of plastic bags should be banned? Q22 :Discuss how you would use the lottery method to select 3 students out of 10 in your class? The Errors that are written on the Statistics button the names of the following is the subset of 50! Very lucid language that is the numerical value of s for the data or ungrouped data equal! Measures of location: mean 3 simply list the data or ungrouped.! A ) Census ( b ) sample answer: the procedure of random. Serious than the Census method due to personal biasness, misinterpretation of results, miscalculations, etc such a set... 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