T F 11. Extrapolation is mostadvisable if it is difficult to predict what the da

Question

T      F      11. Extrapolation is mostadvisable if it is difficult to predict what the data relationshipactually is beyond the range of the existing observations.

T      F      12. Residuals can be computedby taking the difference between observed and predicted values ofY and squaring them to eliminate negative numbers.

T      F      13. The sum of the residualsthat surround a regression line will always be greater than orequal to zero.

T      F      14. The stronger therelationship between X and Y, the closer theplotted points will be to the regression line.

T      F      15. If two variables arehighly correlated, the correlation coefficient will be at or nearzero.

T      F      16. The power of regressionanalysis is best illustrated by the fact that the presence ofoutliers has practically no impact on the values of thecoefficients or their standard deviations.

Explanation / Answer

11. True

12. False

13. False

14. True

15. False

16. False

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