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math 1530
3-4: Measures of Relative Standing
Question | Answer |
---|---|
z Score | number of standard deviations that a given value x is above or below the mean, round to 2 decimal places |
oridnary values | z score is greater than or equal to -2, but less than or equal to +2 |
Unusual values | z score is less than -2 or greater than 2 |
Percentiles | measures of location, denoted P1, P2, ...P99, which divide a set of data into 100 groups with about 1% of the values in each group. |