Question: Multiple regression output from Minitab for the PAH data of Exercise 53 in the previous section included the following information: Unusual Observations What does this

Multiple regression output from Minitab for the PAH data of Exercise 53 in the previous section included the following information:
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?

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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