In the regression equation y-hat = 5 + 2x, what does the slope of 2 mean?
Answer and explanation
Correct answer: D. Each extra unit of x adds 2 to the predicted y
- Step 1: The slope is the change in predicted y per unit of x. Step 2. Here it is +2. Answer: predicted y rises by 2 for each unit of x. Why not the others: The slope parameter 2 indicates the average change in the predicted response y for each one-unit increase in explanatory variable x, whereas 5 represents the y-intercept.
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