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Comment briefly on the following statements : (i) A computer obtained the standard deviation of 20 observations whose values ranged from 65 to 85 as 25. (ii) A student obtained the mean and variance of a set of 10 observations as 10, – 5 respectively. (iii) The range is the perfect mea m&tA¨variability as it includes all the measurements. (iv) For the distr:bution of 5 obsem Bns : 8, 8, 8, 8, 8; mean = 8 and variance = 8. (v) If the mean and s.d. of distribution A are smaller than the mean and s.d. of distribution B respectively, then the distribution A is more uniform (less variable) than the distribution B.

Comment briefly on the following statements : (i) A computer obtained the standard deviation of 20 observations whose values ranged from 65 to 85 as 25. (ii) A student obtained the mean and variance of a set of 10 observations as 10, – 5 respectively. (iii) The range is the perfect mea m&tA¨variability as it includes all the measurements. (iv) For the distr:bution of 5 obsem Bns : 8, 8, 8, 8, 8; mean = 8 and variance = 8. (v) If the mean and s.d. of distribution A are smaller than the mean and s.d. of distribution B respectively, then the distribution A is more uniform (less variable) than the distribution B.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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Comment briefly on the following statements : (i) A computer obtained the standard deviation of 20 observations whose values ranged from 65 to 85 as 25. (ii) A student obtained the mean and variance of a set of 10 observations as 10, – 5 respectively. (iii) The range is the perfect mea m&tA¨variability as it includes all the measurements. (iv) For the distr.bution of 5 obsem mns : 8, 8, 8, 8, 8; mean = 8 and variance = 8. (v) If the mean and s.d. of distribution A are smaller than the mean and s.d. of distribution B respectively, then the distribution A is more uniform (less variable) than the distribution B.
Transcribed Image Text:Comment briefly on the following statements : (i) A computer obtained the standard deviation of 20 observations whose values ranged from 65 to 85 as 25. (ii) A student obtained the mean and variance of a set of 10 observations as 10, – 5 respectively. (iii) The range is the perfect mea m&tA¨variability as it includes all the measurements. (iv) For the distr.bution of 5 obsem mns : 8, 8, 8, 8, 8; mean = 8 and variance = 8. (v) If the mean and s.d. of distribution A are smaller than the mean and s.d. of distribution B respectively, then the distribution A is more uniform (less variable) than the distribution B.
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