Question

⫸write the formula used to find the co-efficient of variables ⫷
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Answer 1

Explanation:

Use the formula (zy)i = (yi – ȳ) / s y and calculate a standardized value for each yi. Add the products from the last step together. Divide the sum from the previous step by n – 1, where n is the total number of points in our set of paired data. The result of all of this is the correlation coefficient r.

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Answer 2

(Zy)i = (yi – ȳ) / sy ( formula used to find the co

-efficient of variables )

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