Posted by Sally on Thursday, November 10, 2011 at 3:12pm.
What mean and median did you find?
The mean is 28 and the median is 23???
Why do you think the mean is higher than the median?
336/12 = 28 right?
Right.
Note that all but two students are between 19 and 25. The other students are much older. That skews the mean, but doesn't affect the median.
The answer in the book says the mean is 8 years less than the median. Please explain.
By your and my calculations, there is 5 years between the median and the mean.
Thank you! I said the mean is 5 years more than the median.
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