ap stat unit 1 formulas

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Last updated 2:47 PM on 9/1/26
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8 Terms

1
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sample mean

x̄ = Σ xi/n

2
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IQR

Q3 - Q1

3
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identifying a high outlier

Q3 + 1.5(IQR) = # < possible outlier

4
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identifying a low outlier

Q1 - 1.5(IQR) = # > possible outlier

5
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median (stem & leaf, dotplot)

(n+1) / 2 (round up and count from lowest value)

6
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z score

data - mean / SD

7
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FRQ formula (shape, outliers, center, variability)

SOCV

8
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median location

n+1 / 2