SOLUTION: A set of n=6 scores has a mean of m=10 another set of scores has n=4 and M=15. If these two sets of scores are combined what is the mean of the combined group?

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Question 589656: A set of n=6 scores has a mean of m=10 another set of scores has n=4 and M=15. If these two sets of scores are combined what is the mean of the combined group?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
10*6=60
15*4=60
---------Add
====>120
.
120/(6+4)=12 mean of the combined group.
.
Ed