Question

I need a little help here...

Which of the following best describes the change in the mean when 894 is included in the data set below? 34, 75, 26, 81, 65, 38, 49

Answer 1

so the mean without 894 would be 52.57
with the 894, the mean would be 157.75
idk what your options are, but there ya go

Answer 2

The mean increases.

Explanation:

Given data set is :

34, 75, 26, 81, 65, 38, 49

Arranging in ascending order, we have

26, 34, 38, 49, 65, 75, 81

Mean =
`(26+34+38+49+65+75+81 )/(7)`

=
`(368)/(7)=52.57`

When 894 is included in the data, the mean becomes

`(368+894)/(8)=157.75`

So, the mean increases.