Question
$X_1$ and $X_2$ have a correlation coefficient $\rho_{X_1, X_2} = 0.2$. $Y_1 = 1 + 2X_1$, and $Y_2 = 3 - 4X_2$. Compute the correlation coefficient for $Y_1$ and $Y_2$ which is $\rho_{Y_1, Y_2}$
easy Probability
Covariance Review IV
A release-checked easy problem for training Covariance.
Practice focus
This Probability problem is tagged Covariance. State the random variables and conditioning information explicitly, then check the result against boundary cases before opening hints or a solution.
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