Question

The graph above shows the frequency distribution of

a list of randomly generated integers between O and
10. What is the mean of the list of numbers?

Answer 1

Key Ideas

• Finding the mean through a graph

Solving the Question

The frequency tells us how many times the integer appears in the set of numbers.

The integer tells us the numbers that appear in the set of numbers.

To find the mean, we add up all the numbers in the set and divide the sum by the number of integers.

Let's write the information on the graph as a list of numbers:

0, 1, 2, 3, 3, 3, 4, 4, 6, 7, 8, 10

Find the sum:

51

Divide the sum by the number of integers (which is 12):

51/12

= 4.25

Answer

The mean is 4.25.