One sample with n = 4 scores has a mean of M = 12,and a second sample with n = 6 scores has a mean of M = 8.If the two samples are combined,what is the mean for the combined set of scores?
A)4.8
B)9.6
C)10.0
D)19.2

Question

Quizplus · Accepted Answer

The mean of the combined set can be calculated by taking the total sum of scores from both samples divided by the total number of scores. For the first sample, the total sum is 4 * 12 = 48. For the second sample, it's 6 * 8 = 48. Combined, the total sum is 48 + 48 = 96, and the total number of scores is 4 + 6 = 10. Thus, the mean for the combined set is 96 / 10 = 9.6.

One Sample with N = 4 Scores Has a Mean