Each of the scatterplots provided show a cluster of points and one stray point.

Question

Each of the scatterplots provided show a cluster of points and one stray point. Complete parts a) through d). Click the icon to view the scatterplots. a) Refer to scatterplot a), shown to the right. Answer questions 1) through 4) about this scatterplot. 1) In what way is the stray point unusual? Does it have high leverage, a large residual, or both? A. The point has high leverage and a large residual. B. The point has a large residual. C. The point has neither high leverage nor a large residual. D. The point has high leverage. 2) Do you think that ports an influential point? No Yes 3) that point were removed from the data, would the correlation become stronger or weaker? Explain. A. Stronger, because the point is close to the regression line. B. Weaker, because the point is close to the regression line. C. Weaker, because the point is far from the regression line. D. Stronger, because the point is far from the regression line. If that point were removed from the data, would the slope of the regression line increase or decrease? Explain. A. Decrease because the point significantly below the new regression line. B. Neither, because the point is close to the regression line or has no leverage. C. Decrease, because the point is significantly above the new regression line. D. Increase, because the port significantly above the new regression line. Click to select your answer

Explanation / Answer

Que no 1. Answer is A.

A. The point has high leverage. & Large residual.

Question no 2. Answer is Yes.

Question No 3. Answer is D

D. Stronger because the point isfr from regression line

Question no 4. Answer is C

C. Decrease because the point is significantly above the regression line.

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