When the outliers are removed, how does the mean change?

dot plot with 1 on 18, 2 on 38, 1 on 40, 3 on 44, 1 on 46, 1 on 48

The mean decreases by 2.75.

The mean increases by 2.75.

The mean increases by 3.25.

There are no outliers.

Step-by-step explanation:

Let us calculat the average medians first

Average (mean) : μ=39

Minimum: 18

Maximum: 48

Variance: 99.6666666667

Standard deviation σ=9.98331942125

Corrected sample standard deviation s=10.9361784916

Coefficient of variation cV=0.280414833118

Signal-to-noise ratio SNR=3.5661451603

Median: 42

Outlier - 18

When we remove 18, the average becomes

Mean = 43.2

Setwise:

Mean of dot plot 1=32

When outlier removed mean = 39