Using the regression line y = 1 + 2x, what is the predicted value when x = 4?

Prepare for the PHFO Quantitative Analysis For Business Exam. Study with flashcards, multiple choice questions, hints, and explanations to ensure confidence and success in your exam!

Multiple Choice

Using the regression line y = 1 + 2x, what is the predicted value when x = 4?

Explanation:
In a regression line, the predicted value of y for a given x comes from y = intercept + (slope × x). Here the intercept is 1 and the slope is 2. Plugging in x = 4 gives y = 1 + (2 × 4) = 1 + 8 = 9. So the predicted value is 9, which matches the correct choice.

In a regression line, the predicted value of y for a given x comes from y = intercept + (slope × x). Here the intercept is 1 and the slope is 2. Plugging in x = 4 gives y = 1 + (2 × 4) = 1 + 8 = 9. So the predicted value is 9, which matches the correct choice.

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