A town's yearly snowfall in inches over a 10-year period is recorded in this table. What is the mean of the snowfall amounts?

The mean of the snowfall in the town for the 10 years recorded is 17.40.
Mean is the average of a set of numbers. Mean is the sum of a set of numbers divided by the total numbers in the set.
Mean = total number of snowfall / number of years
( 11 + 15 + 19 + 17 + 23 + 20 + 17 + 13 + 18 + 21) / 10 = 17.40
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