## Answers

(a) Correlation coefficient(X, Y) = Cov(X, Y)/SD(X)SD(Y)

=

= 0.2187

(b) Performing regression between Y as dependent variable and X as independent variable, we get:

(c) For 5th student, X = 33.

Predicted = 72.46

But actual Y = 60

Residual = 60 - 72.46 = -12.46

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