The list shows the prices of T-shirts at a clothing store. start set 8 comma 10 comma 10 comma 12 comma 15 comma 15 comma 18 end set Which statement best describes the mean of this set?

The mean is found by adding all the values and dividing by how many values there are. The prices add to 8 + 10 + 10 + 12 + 15 + 15 + 18 = 88, and there are 7 prices, so the mean is 88 divided by 7. This matches choice A, the sum of the prices divided by 7.

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