Question

What will happen to the mean of the data below if the outlier, 52, is added?

The mean will decrease.
The mean will increase.
There is not enough information given.
The mean will not change.

Answer 1

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Answer 2

i think its b

Answer 3

To find mean, add
18, 23, 22, 20, 20, 17, 20

= 140

140/7= 20

Now add 52 to the mix:

18, 23, 22, 20, 20, 17, 20, 52
=192

192/8
=24

So it's 20 vs. 24.

Answer 4

So yes, you're correct.