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 Mean:  The sum of the numbers in a set of data divided by the number of pieces of data. This is what we usually call "average." Also called the arithmetic mean.

John's Way of Finding Averages: Apply an alternate method to find the arithmetic mean of a data set.

"Average Families": Use a spreadsheet to find different data sets that will produce the same arithmetic mean.

Comparing the Arithmetic Mean, Geometric Mean, and Harmonic Mean: Using a graphs, what can you say about how the arithmetic mean compares to the geometric mean and the harmonic mean?

Average Groups: Determine the arithmetic mean of a group of terms in a sequence.

Analyzing Test Scores: Find the Standard Deviation and Variance for a set of test scores.