Find the mean, median, mode and range of the data set after you perform the given operation on each data value. 13, 17, 15, 18, 21, 13, 20; add 3.7a) mean 20.4, median 20.7, mode 16.7, range 8b) mean 16.7, median 20.7, mode 18.7, range 8c) mean 21.7, median 14.7, mode 16.7, range 8d) mean 16.7, median 21.7, mode 16.7, range 8

Mean:

Add all the numbers:

13 + 17 + 15 + 18 + 21 + 13 + 20 + = 16.7
16.7 + 3.7 = 20.4

Mean = 20.4

Median:

Order the numbers:

13, 13, 15, 17, 18, 20, 21

The median, or middle number is 17.
17 + 3.7 = 20.7

Median = 20.7


Mode:

The number that repeats the most is 13.
13 + 3.7 = 16.7 

Mode = 16.7

Range:

Highest Number = 21

Lowest Number = 13

21 - 13 = 8

Range = 8

The answer choice that matches is choice A.

Hope this helped☺☺