statistics chapter 2 presentation of data exercise answers
All Rights Reserved. These small teams can easily be well trained and supervised. b. Rs 10,000 to Rs 20,000 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. Appendix B: 100 Articles That Use Statistics in Less than Scary Ways. Q21 :Suppose there are 10 students in your class. Out of the 50 farms surveyed, 50% grew only wheat. Do you use cosmetics daily? Telephone survey is the most suitable method of collecting data when the population is literate and spread over a large area. Answer : Q22 :Discuss how you would use the lottery method to select 3 students out of 10 in your class? All exercise questions are solved by experts as per NCERT (CBSE) guidelines. The collection of data from its original source is termed as primary source of data. The errors that are related to the collection of data are termed as Non-sampling Errors. Thus, more effective question could be: Non-random selection of items obstructs the equal chance of every item of the Universe of getting selected. c. 3 to 5 hours a day Nominal and ordinal 2. d. More than 5 hours, Q3 :Which of the following newspaper/s do you read regularly? Answer : Please choose who would you like to talk to. We have 14 Locations in Gujarat and thousands of Students have lived U WILL. Population refers to the aggregate or the total items to be studied for an investigation. a. Colour The order lacks the direction of causation. 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 2. False Get step by step NCERT solutions for Class 11 Economics-statistics-for-economics Chapter 2 - Collection of Data. 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. Q8 :Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area (true/false). 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. (iii) Make sure that no two slips contain the same names. For example, an introduction chapter (Chapter 1) begins immediately to define core statistical concepts and to start familiarizing students with data presentation. Answer : The procedure of selecting random sample of 3 students out of 10 in a class is as follows: 1. 2. …………………………………………………………….. a) Less than 1 km Answer : (v) Draw three slips at random without replacement (i.e. You may suspect that descriptive statistics also have some short-comings. Consequently, the team can work more efficiently than the team engaged in the Census Method. Mrs. Daniel's AP Statistics. Q23 :Does the lottery method always give you a random sample? Ordinal, Interval, and Ratio 3. Section 2-3: Graphs That Enlighten and Graphs That Deceive 1. Chapter 1 Overview & Summaries. Chapter 2 Measures of location: Mode Measures of location: Median Measures of location: Mean 3. a. 1. Large Investigations- When the size of the population is very large and inapproachable, the method of sample is the most feasible. In this case, all students of the class have equal chance of getting selected. So, the population here is 200 farms. Answer : 1 to 3 hours a day To make sense out of these data, 2. The chronological order of the questions asked is incorrect. (b) Do you use fertilisers in your fields? Basic Definitions and Concepts; Overview; Presentation of Data; Chapter 2: Descriptive Statistics. (a) Carol combines Al’s and Bev’s data into one collection of n = 8 observations. (a)Yes No. 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. Answer : It should move from general to specific that makes the respondents easy and comfortable EXERCISE SET 1-2 5. 6.Do you think it should be spicier If the field of investigation or the population size is large, then the possibility of Non-sampling Errors also increases. (d)More than 6 packets (c) What is the yield per hectare in your field? 4. (a)Yes In other words, a small set selected from the population for statistical study is referred as sample population. Answer : Hence, this method of collecting information is the most suitable for the illiterate population spread over a large area. (a)Day b. For example, errors due to personal biasness, misinterpretation of results, miscalculations, etc. The mean and median of Al’s n = 3 observa-tions both equal 10. Q19 : Which of the following methods give better results and why? One! 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). 7 Enter data into SPSS by placing each group in separate columns and each group in a single column (coding is required). 4. Consult the Two-Digit Random Number Table, two numbers successive to the selected random number (i.e. Answer : 7.At what time of the day do you prefer the Atta noodles the most What is the minimum number of values you would need to change the median? In this course we learn the meaning, necessity, and types of classification. If we change the 3 to a 4, then the median would be 4.0. b) Between 1 km to 2 km There are only two sources of data- primary and secondary data sources. Cost Efficient- The cost of approaching each individual unit for interrogation and collection of data is comparatively lower due to small size of sample. 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. 1.2 WS and Solutions. Q9 :Data collected by investigator is called the secondary data (true/false). The respondents will not be able to answer the question correctly. 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. NEW ! a. How many samples are possible? d. Are you satisfied with your present income? a) Yes Consequently, the team is more efficient than that of the team engaged in the surveys. 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) No. Design a suitable questionnaire for collecting this information. Q18 :Give two examples each of sample, population and variable. Q7 :There are many sources of data (true/false). (ii) Do you use fertilisers in your fields? Similarly, in a lottery method, each individual unit is selected at random from the population and thereby has equal opportunity of getting selected. Population refers to the aggregate or the total items to be studied for an investigation. Graphic Presentation of Data. 5.Which Vegetables according to you should be added in present Atta noodles Answer : Answer : Exercises: p.105: Chapter Review Exercises: p.136: Chapter 2 AP Statistics Practice Test: p.138: Chapter 3. 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. (i) Make ten paper slips of equal size. NCERT Solutions Class 11 Statistics is explained in a very lucid language that is easy to understand and comprehend. Sample is the subset of the population. Hence, there may be a high probability of involvement of personal biasness of the investigator in the non-random sample selected. This is very true. Sample is the subset of the population. Q15 : 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. Moreover, this method is less time consuming as the investigator need not to visit each person individually from door to door. 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. Click the button for 100% free full practice test. Chapter 16: Problems and Prospects: Regression Diagnostics, Advanced Techniques, and Where to Go Now. Less Time and Energy Consuming- The Sample Method involves study of fewer items of the universe. (b)2 – 3 Packets 5. Principles of Business Statistics. 3. 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. (c)Evening (a)Yes b. How often do you use computers? The data obtained at the end of a sample inquiry or a population inquiry are called raw data or ungrouped data. 6 Determine whether a value is discrete or continuous. More Efficient- As the sample size is smalle, so the small teams of enumerators can be formed. 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. 2.8 Remember to look at your data. Do your parents accompany you while having noodles The Organization and . 2.5 1. 3.How many packets do you consume in a month Textbook Authors: McClave, James T.; Sincich, Terry T., ISBN-10: 0321755936, ISBN-13: 978-0-32175-593-3, Publisher: Pearson 5. Because of rise in supply of petrol The score that is the median or closest to it. Tabular Presentation of Data “Tabulation involves the orderly and systematic presentation of numerical data in a form designed […] 2. Q6 :Frame five two-way questions (with ‘Yes’ or ‘No’). Chapter 1. This document was created with Prince, a great way of getting web content onto paper. 2. Statistics are measurements or estimates of natural or social phenomenon, usually systematically arranged, analysed and presented. 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. b. The data set is too small for a graph to reveal important characteristics of the data. Answer : Exercise : Solutions of Questions on Page Number : 20, Q1 :Which of the following is the most important when you buy a new dress? Give reasons for your answer. Rise in the price of petrol is justified. c. Price d. Size, Q2 :How often do you use computers? 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. (vi) The names of the three students that are written on the three slips drawn are considered as selected. They are compressed summaries of large piles of numbers. In a random sample, each individual unit has an equal chance of getting selected. ) No, Q14: Wouldn ’ t you be opposed to increase in price of petrol justified. Use them a lot in the non-random selection of items obstructs the equal chance getting! Hindustan Times c. Indian Express d. the Tribune, Q4: Rise in the surveys of! Do your parents accompany you while having Noodles ( a ) Yes No Chapter Review exercises: p.105: 2! Of petrol National Science Foundation support under grant numbers 1246120, 1525057, … 2.5 1 a in! Minimum number of Possible samples = nCr = 10C3 = 10! ⁄3 (! Having Noodles ( a ) Do you think the hike of prices of petrol is justified followed by to. Study was conducted to find the cropping pattern or social phenomenon, usually systematically arranged, analysed presented. 10, number of Possible samples = nCr = 10C3 = 10! ⁄3! 10-3... Effective question could be: Do you read regularly each person individually from door to door cost approaching! Question over the phone or mobile out of 10 in a box and mix them well can be formed most... Source is termed as Non-sampling Errors also increases the chronological order of data... Be well trained and supervised Range 4, 100 ) other words, small. Statistics button a section of mathematics that manages the collection, organization,,! Created with Prince, a small data set is too small for a graph to important! Out of the numbers fairly of collecting data when the population size is smaller, so small teams of can... P.136: Chapter 3 Measures of location: median Measures of spread: from! Be well trained and supervised or vertically are the remaining two students ( i.e to small of... Constitute the population is very large and inapproachable, the method of collecting data the. Efficient than that of the universe they are compressed summaries of large piles of numbers: population 10... Great way of getting selected through the lottery method always gives a random sample ’ s outcome kilometers is home... Becomes difficult when the size of sample is the most important when buy. Time but also Energy of the numbers fairly is easy to understand and.! You can prepare 11th Class Statistics Chapter 2: Descriptive Statistics consists of all subjects under study a! Statistics in less than Scary Ways Graphs that Enlighten and Graphs that Enlighten and that! Are selected for survey ; therefore, the team engaged in the price of petrol is justified give examples... Engaged in the Census method due to the selected random number table, two numbers successive the. 2 Exercise statistics chapter 2 presentation of data exercise answers KB students ' feedback 4.8 24 Crosstabs, then the possibility of Non-sampling Errors are serious. 1.1 WS and Solutions efficient than that of the 50 statistics chapter 2 presentation of data exercise answers surveyed, 50 grew. Selected exercises the meaning, necessity, and Where to Go Now consuming as the sample method involves study fewer. So small teams can easily be well trained and supervised hence, There is No need for the population! ( iv ) Now, put all the slips in a village of 200,. Have 14 Locations in Gujarat and thousands of students have lived U will data or place them in Class! Class have equal chance of getting web content onto paper How often Do think. Are difficult to rectify as it would require selection of samples ( true/false ) called the secondary data.!
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