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12 cards from this deck
How many standard deviations a data point is from the mean
z=x−μσz = \frac{x - \mu}{\sigma}z=σx−μ
The data point
The mean of the data set
The standard deviation of the data set
Data point is above the mean
Data point is below the mean
Data point is exactly at the mean
Beyond ±3\pm 3±3
000
111
Compare scores across distributions and standardise data
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