Statistics Alive! Formulas Flashcards by Michael Gale

Q

mean

A

μ = ( Σ Xi ) / N

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Q

Variance

A

s² = Σ(X-M)²/ N

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Q

standard deviation (descriptive)

A

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Q

z score

A

z = X-M / s

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Q

T score

A

t = 10z + 50

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Q

CEEB score

A

CEEB = 100z + 500

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Q

standard deviation (inferential)

A

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