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Calcium Supplements

A. (Ey)(Ex2)-(Ex)(Exy) / n(Ex2) - (Ex2)

B. n(Exy) - (Ex)(Ey) / square root of n(Ex2) - (Ex)2

C. r= n(Exy) - (Ex)(Ey) / sq. root of
[n(Ex2) - (Ex)2][n(Ey2) - (Ey)2

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Solution Summary

The solution addresses which is the correct formula for the scenario - Sample data were collected in a study of calcium supplements and their effects on blood pressure. One of the following formulas is correct:

A. (Ey)(Ex2)-(Ex)(Exy) / n(Ex2) - (Ex2)

B. n(Exy) - (Ex)(Ey) / square root of n(Ex2) - (Ex)2

C. r= n(Exy) - (Ex)(Ey) / sq. root of
[n(Ex2) - (Ex)2][n(Ey2) - (Ey)2

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