The only factors are 1 and 29
Because 44 is a bigger number than 4 it is 11 times bigger so the difference is larger than a proportional number
9 + 15 / 5 x 13 =
9 + 3 x 13 =
9 + 39 = 48
The mean of the data plot is 7.25.
The mean of the data plot without the outlier is 4.333333333.
So the mean decreased by 2.916666666.
