Homework Help: Math

Posted by Sharon on Saturday, October 20, 2012 at 9:42pm.

A sample of n _ 11 scores has a mean of M _ 4. One person with a score of X _ 16 is added to the sample.
What is the value for the new sample mean?

Math - drwls, Sunday, October 21, 2012 at 1:38am
The sum of 11 scores was 4x11 = 44
The sum of 12 scores becomes 44 +16 = 60
The new mean (of 12 scores) is 60/12 = 5

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