math
posted by Sally .
In her art class, Ms. Walter has 12 students whose ages are listed below:
19, 20, 20, 20, 21, 22, 24, 24, 25, 25, 56, 60
She calculated the mean and the median of their ages. What is the relationship between these two values?

math 
Ms. Sue
What mean and median did you find?

math 
Sally
The mean is 28 and the median is 23???

math 
Ms. Sue
Why do you think the mean is higher than the median?

math 
Sally
336/12 = 28 right?

math 
Ms. Sue
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. 
math 
Sally
The answer in the book says the mean is 8 years less than the median. Please explain.

math 
Ms. Sue
By your and my calculations, there is 5 years between the median and the mean.

math 
Sally
Thank you! I said the mean is 5 years more than the median.
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