Question

Year  Snowfall in inches

2001    11
2002    15
2003    19
2004    17
2005    23
2006    20
2007    17
2008    13
2009    18
2010    21





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?

a. 16.4 in.
b. 17.1 in.
c. 17.4 in.
d. 18.1 in.

Answer 1

Answer: C

Explanation:

If you add up all of the numbers, then divide by how many numbers there are, you find the mean.

In this Question, you add 11,15,19,17,23,20,17,13,18, and 21. You get 174 as the answer. You divide by 10 and get 17.4. C is the answer.

Answer 2

17.4 inches

Explanation:

The mean is the average of all the numbers listed in the set. In order to find the mean you must add up all the numbers in the set and divide it by the number of numbers in the set.