The boys' basketball team at Washington High School has been doing really well so far this year. In the past seven games, they've scored the following points.

83, 51, 64, 78, 84, 62, 75

What is the mean absolute deviation of their scores, rounded to the nearest tenth?

Question

The boys' basketball team at Washington High School has been doing really well so far this year. In the past seven games, they've scored the following points.

83, 51, 64, 78, 84, 62, 75

What is the mean absolute deviation of their scores, rounded to the nearest tenth?

Vocaloid · Answer

Calculating this by hand is a little time consuming, but here are the steps:
1. calculate the mean (add up all the numbers and divide by 7 since there are 7 numbers)
2. for each number, take the absolute value of the difference between that number, and the mean. for example, for 83, calculate |83-mean|
3. take the mean of the numbers from step 2. the result is your mean absolute deviation. round to the nearest tenth (1 decimal place) as stated.