# Question

If the correlation coefficient ρ exists, show that ρ satisfies the inequality −1 ≤ ρ ≤ 1.

## Answer to relevant Questions

Let X and Y have the joint pmf defined by f(0, 0) = f(1, 2) = 0.2, f(0, 1) = f(1, 1) = 0.3. (a) Compute μX, μY, σ2X, σ2Y, Cov(X, Y), and ρ. (b) Find the equation of the least squares regression line and draw it on your ...Let the joint pmf f(x, y) of X and Y be given by the following: (x, y) f(x, y) (1, 1) ....... 3/8 (2, 1) ....... 1/8 (1, 2) ....... 1/8 (2, 2) ....... 3/8 Find the two conditional probability mass functions and the ...For the random variables defined in Example 4.4-3, calculate the correlation coefficient directly from the Definition Let Show that f(x, y) is a joint pdf and the two marginal pdfs are each normal. Note that X and Y can each be normal, but their joint pdf is not bivariate normal. The pdf of X is f(x) = 2x, 0 < x < 1. (a) Find the cdf of X. (b) Describe how an observation of X can be simulated. (c) Simulate 10 observations of X.Post your question

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