Stats Solutions

(See Solution) Regressions often include interaction terms obtained by multiplying two of the right-hand side variables together. Consider the following regression:

Question: Regressions often include interaction terms obtained by multiplying two of the right-hand side variables together. Consider the following regression:

Y = 9 + X 1 + 3X 2 - 0.20X 1 X 2 .

  1. What is the point estimate when X 1 = 5 and X 2 = 1?
  2. Plot Y against X1 when X 2 =0. On the same graph, plot Y against X 1 when X 2 = 3. Describe how the effect of X 1 on Y depends on the level of X 2 in this model.

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Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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