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10 cards from this deck
Bell curve (or normal curve)
All three are equal
xˉ=∑xn\bar{x} = \frac{\sum x}{n}xˉ=n∑x
Middle value when scores arranged in order
Mean
Median
Symmetrical about the mean
Blood pressure, body weight, hand span, sepal width
Approach but never touch horizontal axis (asymptotic)
Mean and standard deviation
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