# statistics

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a set of maths exame score mean is 70 and variance is 8. a set of english score has mean is 74 and variance is 16. for which exame whould a score of x=78 have a higher standing?

• statistics -

Standard deviation (SD) = square root of variance

Z = (score-mean)/SD

Whichever Z score is the highest.

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Can you step by srep dumb this down so that I can understand how to get the answer please?

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