Question

Which of the following best describes the change in the mean when 1213 is included in the data set below?

26, 34, 38, 49, 65, 76, 81

Answer 1

Explanation:

Given in the data set as

26, 34, 38, 49, 65, 76, 81

Sum = 369

No of entries = 7

Mean =52.71

When 1213 is included

New sum = 1582

No of entries =8

New mean = 197.75

Thus mean increases by 145.04