2 Data presentation + interpretation Flashcards by Toby Bond

Q

What is the formula for variance

A

((sum of x^2) divided by n ) - (sum of x/n)^2

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Q

n

A

n

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Q

formula = how to calculate range of outliers

A

a value smaller than Q1-1.5x(Q3-Q1)

or a value greater than Q3+1.5x(Q3-Q1)

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Q

how to calculate Q1 formula

A

(N+1) x 1/4

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Q

calculate Q3 formula

A

(N+1) x 3/4

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Q

calculate Q3 formula

A

(N+1) x 3/4

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