Question

Seven students in a small class all made the same score on a test, as shown in the table. What was the mean absolute deviation for the class?

Responses

A 0

B 80

C 560

D undefined

Answer 1

A 0

Explanation:

if all have the same score, then this is also the mean value. and then no data point has any difference from the mean value. so, there is simply no deviation at all.