AP Statistics Terms & Definitions Practice Test

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Empirical Rule
Range of the middle 50 of the values; Q3-Q1 75th percentile - 25th percentile
A statistical rule stating that for a normal distribution, almost all data will fall within three standard deviations of the mean.
A table containing counts for two categorical variables. It has r rows and c columns.
The hypothesis that states there is a difference between two or more sets of data.