Finding the Mean of a Data Set

Front

What is the mean of a data set?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the total count of numbers.

Front

How do you calculate the mean?

Back

1. Add all the numbers in the data set. 2. Divide the sum by the number of values in the data set.

Front

Find the mean of 9, 11, 2, 6.

Back

7

Front

Find the mean of 5.5, 4.5, 6.75, 3.25.

Back

5

Front

Find the mean of 5, 11, 2, 12, 4, 2.

Back

6

Front

Find the mean of 120, 120, 90, 70.

Back

100

Front

Find the mean of 3.8, 4.2, 4.0, 4.2, 4.2.

Back

4.08

Front

What is the formula for finding the mean?

Back

Mean = (Sum of all values) / (Number of values)

Front

What does it mean if the mean is higher than the median?

Back

It indicates that there are higher values in the data set that are pulling the mean up.

Front

What does it mean if the mean is lower than the median?

Back

It indicates that there are lower values in the data set that are pulling the mean down.