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4 Cards in this Set
- Front
- Back
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Pth percentile |
the value with P percent of the observations less than it. |
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cumulative relative frequency rate |
Plot a point corresponding to the cumulative relative frequency in each class at the smallest value of the next class. |
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Standardizing
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converting observations from original values to standard deviation units. To standardize a value, subtract the mean of the distribution and then divide by the standard deviation.
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Standardized Value (z-score) |
If x is an observation from a distribution hat has known mean and standard deviation the standardized value of X is. z=x- mean divided by standard deviation tells us how many standard deviations from the mean an observation falls and in what dirrection. |
