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10 cards from this deck
How far a score is from the mean in standard deviations
z=x−xˉsz = \frac{x - \bar{x}}{s}z=sx−xˉ
The score is above the mean
The score is below the mean
The score equals the mean
One standard deviation above the mean
One standard deviation below the mean
Mean = 0, Standard deviation = 1
Standardise and compare scores from different distributions
The score is further from the centre of the data
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