Question 566844
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The mean is the sum of the data divided by the number of data points.  The problem is the way that you represented your data.  You wrote 80+83+79+86 which is really only one number.  So if you really meant "What is the mean of 80, 83, 79, and 86, then sum the 4 numbers and divide by 4.  But if you meant exactly what you wrote, only divide by 1.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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