The following table shows the number of lemons that grew on Mary's lemon tree each season last year. Find the mean. season winter spring sum fal
Number of lemon 3 15 21 13

The mean is 13

Explanation:

First you add up all of the numbers. In this case, it is 52.

Then you divide the number 52 by the number of number there are. In this case, there are 4 numbers.

After you do that you get the answer 13

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radiant energy is a form of kinetic energy only.(a)