A data set has n items. The sum of the items is 800 and the mean is 20. (a) Find n. The standard devistion of this data set is 3. Each value in the set is multiplied by 10. (b) (1) Write down the value of the new mean. (1) Find the value of the new variance.
A data set has n items. The sum of the items is 800 and the mean is 20. (a) Find n. The standard devistion of this data set is 3. Each value in the set is multiplied by 10. (b) (1) Write down the value of the new mean. (1) Find the value of the new variance.
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 4CYU
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