Multiple regression output from Minitab for the PAH data of Exercise 53 in the previous section included
Question:
Unusual Observations
What does this suggest about the appropriateness of using the previously given fitted equation as a basis for inferences? The investigators actually eliminated observation #7 and re-regressed. Does this make sense?
Transcribed Image Text:
Obs xl flth Fit SE Fit Residual st Resid 1. 25X 2.62R 6 243500 604.7 582.9 40.7 21.8 7 67793 27.7 139.3 12.3-111.6
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Before removing any observations we should investigate their source eg were mea...View the full answer
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Related Book For
Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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