A customer service representative resolved the following number of support tickets over fi… — GRE General Test

A customer service representative resolved the following number of support tickets over five consecutive days: $18$ , $24$ , $15$ , $31$ , and $22$ . What is the arithmetic mean of the number of tickets resolved per day by the representative?

Answer: 22 tickets

Answer

The arithmetic mean of the number of tickets resolved per day is

22

The mean of a data set is calculated by taking the sum of all values and dividing by the total number of items. The sum of the numbers is

18 + 24 + 15 + 31 + 22 = 110

. Dividing

110

5

yields

22

Step-by-Step Solution

Sum all data values in the set

18 + 24 + 15 + 31 + 22 = 110

To find the mean, the first step is to calculate the total sum of all observations.

Divide the total sum by the total number of values

\frac{110}{5} = 22

The arithmetic mean is defined as the sum of the values divided by the count of the values.

Key Concept

Arithmetic Mean

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