Measures of Center Worksheet

Measures of Center: Mean, Median, Mode

Carefully read each question and provide the most accurate answer. Show your work where applicable.

1. Calculate the mean, median, and mode for the following data set: 15, 22, 18, 25, 20, 18, 28, 20, 18, 22

Mean:

Median:

Mode:

2. In a positively skewed distribution, which of the following is generally true?

3. The   is the value that appears most often in a data set.

4. When a data set has an extreme outlier, the   is often a more appropriate measure of center than the mean.

5. The mean is always one of the values in the data set.

6. A small business has employee salaries of $30,000, $35,000, $40,000, $40,000, and $150,000. Calculate the mean and median salaries. Which measure of center better represents the typical salary of an employee?

Mean:

Median:

Which measure is better and why?

7. Consider the following bar graph showing the number of books read by students in a class. Determine the mode of the data.

Mode: