Same chapter3 marksDifficulty: Medium
If r = 0.8, the standard deviation of x is 3 and that of y is 4, find the regression coefficient of y on x.
Linear Regression
3 marksDifficulty: Medium
If the two regression coefficients are 0.8 and 0.45, find the coefficient of correlation.
Original Khojo Papers practice question — not from a past board paper.
Answer
0.6
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The correlation coefficient is the geometric mean of the two regression coefficients, √(0.8 × 0.45) = √0.36 = 0.6, taking the positive sign because both coefficients are positive.
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