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AP Stat Unit 6
| Term | Definition |
|---|---|
| discrete random variable | a final number of yes/no responses with gaps between values |
| mean of a discrete random variable | sum of x * P(x) |
| standard deviation of a discrete random variable | square root of [ (sum of x-mean)^2 * P(x) |
| variance of a discrete random variable | (sd)^2 |
| z score | (x - mean)/(sd) |