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Question
Mean of x = 53, mean of y = 28 regression co-efficient y on x = −1.2, regression co-efficient x on y = −0.3. Find coefficient of correlation (r).
Solution
Given: `barx = 53`,
`bary = 28`,
byx = −1.2,
bxy = −0.3
Using, r2 = byx × bxy
= −1.2 × −0.3
= 0.36
`\implies` r = −0.6
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