- Mean, median and mode: Learn how to calculate the mean, median and mode, and learn a special formula that relates the sum of numbers to the mean of those numbers
- When Mean = Median: Learn about situations in which the mean of a set equals the median of the same set
- Weighted Averages: Learn how to calculate weighted averages and some properties of weighted averages
- Range and Standard Deviation: Learn how to calculate range and learn the formal and informal definitions of standard deviation
- More Standard Deviation: Learn how to calculate variance and how to work with units of standard deviation
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