Shorten the calculations with the power of multiplication. Using the meaning of multiplication, the video shows a more efficient method of calculating the mean for data displayed in a frequency table. There is no need to write out each data point; simply multiply the frequency by the value to get the total. Be sure to get the total number of data points by adding up the frequencies.

Concepts

frequency tables, mean, data analysis, averages

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Additional Tags

math

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Instructional Ideas

• Brainstorm ways to determine the mean from a frequency table before showing the video

Classroom Considerations

• The class should know how to calculate the mean of a data list
• Textbook exercises contain practice for means along with median, mode, and range

Pros

• Performs arithmetic with a calculator so as not to take away from the task
• Includes a third column as a place to record the products

Cons

• None

Common Core

6.SP.B.5.c MP5 MP6