Question

A number was added to each value in an original data set to give a new data set with values eleven, 8, 7, twelve, and 7. What number was added to each value if the original mean was 6?

1

2

3

6

Answer 1

Okay, so first find the mean of the new data.

Answer 2

11+8+7+12+7 = 45 / 5 = 9

Answer 3

so your new mean is 9, and your old mean is 6 ... how much did the mean increase?

Answer 4

by 3

Answer 5

There ya go :D

Answer 6

Thanks so much! :D

Answer 7

No problem!