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The two regression coefficients of a data set are 0.8 and 0.5. The correlation coefficient between the variables is approximately

2116Medium DSSSB TGT Computer Science 0 replies 1 views
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The two regression coefficients of a data set are 0.8 and 0.5. The correlation coefficient between the variables is approximately

  • A0.40
  • B0.65
  • C0.63
  • D1.30
Correct answer: C

Explanation

The correlation coefficient is the geometric mean of the two regression coefficients: r = √(0.8 × 0.5) = √0.4 ≈ 0.63.

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