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.
: 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?
: 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.