Asked by randy

If the mean of a set of data is 20.00, and 12.20 has a z-score of –1.30, then the standard deviation must be

12 years ago

Answered by Steve

-1.3σ = (12.20-20.00)
σ = 6.00

12 years ago

Answered by jzsz

jskms

8 years ago

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