The average score on a statistics test was 2.34 with a standard deviation of 0.84. The teacher suspects that the exam was very difficult; Based on the above, you want to adjust the scores so that the mean is 3.3 and the standard deviation is 0.21. Compute the values a and b such that the fit of type aX+b gives the desired mean and variance? Calculate:
The average score on a statistics test was 2.34 with a standard deviation of 0.84. The teacher suspects that the exam was very difficult; Based on the above, you want to adjust the scores so that the mean is 3.3 and the standard deviation is 0.21. Compute the values a and b such that the fit of type aX+b gives the desired mean and variance? Calculate:
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 14PPS
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The average score on a statistics test was 2.34 with a standard deviation of 0.84. The teacher suspects that the exam was very difficult; Based on the above, you want to adjust the scores so that the mean is 3.3 and the standard deviation is 0.21. Compute the values a and b such that the fit of type aX+b gives the desired mean and variance?
Calculate:
-
a= ?
-
b=?
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