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TheBusinessMan
To find the mean, you add up all the snowfall amounts and then divide that total by the number of snowfall years. 
Your answer is 17.9 inches.
Brick123
Hello!

First you'll need to add all of the inches of snowfall together.

15+11+18+25+13+20+16+28+15+18=179

Next you'll need to divide 179 by the number of numbers that were added together

179/10=17.9

Once you've done that, your mean will be 17.9 inches

I hope this helps!

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