Finding Average

Goal

I can identify ​the mean, median, mode, and range of a data set.

Find the Mean

Carla ​is in a bowling league. The league is ranking the teams by average score. What is the mean, or average, final score of the five bowlers on Carla's team?

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Median

To find the median, list the numbers in order from least to greatest and find the number in the middle.

If there are two middle numbers, add them together and divide by 2 to calculate the median.

Find the Median

Trey and Sarah each ​download songs to their music libraries. Their players list each type of music and the total playing time in minutes for each type. How can Trey and Sarah each summarize their data sets using the median?

Mode

Mode is the number that appears the most.

Find the Mode

Look at Trey's and Sarah's data music libraries. ​How can Trey and Sarah each summarize their data sets using the mode?

Range

To find the range, list the numbers in order from list to greatest, then subtract the highest value from the lowest value.

Find the Range

Look at Trey's and Sarah's music libraries. What is the range of the playing times in each of their data sets?

Multiple Choice

Boris the baker bakes a lot of bread. The number of loaves he gets from a batch varies though. Here's how many loaves he's gotten from the last couple batches: 10 loaves, 9 loaves, 10 loaves, 9 loaves, 11 loaves, 8 loaves, 10 loaves.

What is the mode?

• 9.6 loaves

• 10 loaves

• 3 loaves

• None

Multiple Choice

Allen the Astronaut has to carefully measure his weight before going into space. Over the last week, here are his measurements in kilograms: 87.1, 87.6, 86.9, 87.0, 87.5, 87.2. Find his mode weight.

• 87.2 kilograms

• There isn't one.

• 87.15 kilograms

• 0.7 kilograms

Open Ended

What is the mean, median, and mode of the following data set.

Multiple Choice

The Mean is the ______________.

• average

• sum

• middle number

Multiple Choice

The mode is the number that occurs _______ often.

• most

• less

Multiple Choice

The range is the difference between the ___________number and ________ number.

• middle - last

• biggest - smallest

Multiple Choice

The median is the _____________.

• average

• middle number

• subtract of the smallest numbers from the biggest number.