Question

Which value should be added to this data set to produce a mean of 13?

________ should be added to the data set to produce a mean of 13.

Answer 1

18

Explanation:

I got it right

Answer 2

10 is 3 units below the desired mean; 11 is 2 units below the desired mean. Together, these numbers are 5 units below the desired mean. We need to add a number that is 5 units above the desired mean: 13 + 5 = 18.

18 should be added to the data set to produce a mean of 13.