Here are 10 test scores: 30, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 74.

Does this set have an outlier and, if so, how does removing it affect the mean?

Question

Mathematics

Triston Dominguez

25 September, 23:01

Here are 10 test scores: 30, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 74.

Does this set have an outlier and, if so, how does removing it affect the mean?

+1

Answers (1)

Know the Answer?

Kate · Answer 1

The outlier is 30 (yikes!), and if you remove it you can add the others to each other, divide by 9, and the mean becomes 78.8888888888 (pretty much 79).

Here are 10 test scores: 30, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 74.Does this set have an outlier and, if so, how does removing it affect the mean?

Here are 10 test scores: 30, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 74.

Does this set have an outlier and, if so, how does removing it affect the mean?