Question

The data set shows the numbers of hours students study the week before a test. Find and interpret the mean absolute deviation of the data. Write your answer as a decimal. 3, 4, 5, 6, 6, 7, 8, 8, 9, 9 The data values differ from the mean by an average of hours.

Answer 1

Step-by-step explanation:

3 + 4 + 5 + 6 + 6 + 7 + 8 + 8 + 9 + 9 / total of numbers or 10 = 65 ÷ 10 = 6.5 This is the mean.

3 - 6.5 = 3.5

4 - 6.5 = 2.5

5 - 6.5 = 1.5

6 - 6.5 = 0.5

6 - 6.5 = 0.5

7 - 6.5 = 0.5

8 - 0.5 = 7.5

8 - 0.5 = 7.5

9 - 0.5 = 8.5

9 - 0.5 = 8.5

MAD = 1.7