gusthedog
Answered

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?



Answer :

franeli
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).

Other Questions