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July 4, 2015

Homework Help: statistics

Posted by Joan on Sunday, January 27, 2008 at 6:48pm.

-A set of seven scores has a mean of 10. If one of the scores is changed from X=15 to X=1, what will be the new value for the new mean?

-A sample of n=8 scores has a mean of M=12. One new score is added to the same and the new mean is found to be M=13. What is the vaule of the new score?

What steps do I follow to figure out these types of problems? I don't quite understand how the book is explaining it.

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