In a certain class, test scores average out to 60, with a standard deviation of 20,...

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In a certain class, test scores average out to 60, with a standard deviation of 20,...

In a certain class, test scores average out to 60, with a standard deviation of 20, as do scores on the final. The correlation between test scores and the final scores is about 0.5. Estimate the average final score for the students whose test score was:

80

	A.	67
	B.	80
	C.	85
	D.	70

math Statistics-And-Probability

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Answer 1

Answer #1

r=0.5 Test scone mean (4= Go 20 final score mean (uz 60 20 test scanso i yo, za 80 - 60 Ro 1 d By correlation coefficient I f

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Answer 2

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