Question

12, 36, 31, 37, 38, 37, 31
62, 55, 58, 73, 219, 51, 73
54, 52, 52, 56, 64, 55, 53, 54
31, 29, 10, 32, 30, 52, 33, 31


A) only mean decreases
B) mean and median decrease
C) mean and median increases
D) none

Answer 1

Match each data set with the effect of eliminating the outlier(s).

Answer 2

@bibby @aryandecoolest @ganeshie8 @physicscrap

Answer 3

that's one full data?

Answer 4

its like matching ABCD with the options above it

Answer 5

I would say B. Your outliers are in the lower range, meaning they will decrease, causing your mean and median to decrease as well. :)

Answer 6

First arrange each row of data in increasing order. I will do the first row of data.
12, 36, 31, 37, 38, 37, 31 becomes:
12, 31, 31, 36, 37, 37, 38
Median is the middle number which is 36.
The outlier is 12. If 12 is eliminated, the median will increase to 36.5.
Since 12 is at the lower end, if we eliminate a low number, the mean will increase.
So for the first row of data, if the outlier is eliminated, both mean and median will increase.

Use similar procedure for the remaining 3 sets of data.