Question

Calculating Mean Absolute Deviation

The hours students reported practicing their instruments last grading quarter were 29, 20, 36, 44, 30, 32, and 40.
х
The mean hours students reported practicing their instruments is
The mean absolute deviation for the data is

Answer 1

Answer:mean 33

Explanation:

mad 6

Answer 2

mean =33

mad = 6

Explanation:

First we need to find the mean

Add up all the numbers and divide by the number of numbers)

(29+ 20+ 36+ 44+ 30+ 32+ 40)/7

231/ 7

33

To find the mean absolute deviation

take the positive difference for each term and then divide by the number of terms

((33-29)+ (33-20)+ (36-33)+ (44-33)+ (33-30)+ (33-32)+ (40-33))/7

42/7

6