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when the outlier(s) are removed, how does the mean change?

dot plot with 1 dot over 18, 2 dots over 34, 3 dots over 38, 2 dots over 40, 3 dots over 44, 2 dots over 46, and 2 dots over 48

the mean decreases by 2.1.
the mean increases by 1.6.
the mean increases by 2.1.
there are no outliers.

The mean is the average.

Total all the numbers and divide by the quantity:

600 / 15 = 40

Now the outlier is the number 18, so subtract 18 from the total and subtract 1 from the quantity and find the mean:

582 / 14 = 41.57 = 41.6

The mean increase by 1.6

The correct answer is The mean increase by 1.6

explanation:

step-by-step explanation: