A sample of n = 4 scores has a mean of M = 8.If one new score with a value of X = 3 is added to the sample, what will be the value for the new mean?
A)M = 7
B)M = 8
C)M = 8.75
D)cannot be determined with the information provided

Question

Quizplus · Accepted Answer

The original total of the scores is 4 * 8 = 32. Adding a new score of 3 gives a new total of 35. The new sample size is 5, so the new mean is 35 / 5 = 7.

A Sample of N = 4 Scores Has a Mean