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प्रश्न
For a bivariate data byx = -1.2 and bxy = -0.3. Find the correlation coefficient between x and y.
उत्तर
Correlation coefficient is given by
r = `+- sqrt[ b_(yx) . b_(xy) ]`
= `+- sqrt( -1.2 xx -0.3 )`
= `+- sqrt (0.36)`
r = - 0.6
[ ∵ both byx and bxy are negative. ]
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