In Exercise we saw that Vicki Keith s round-trip swim of Lake Ontario was an obvious outlier among the other one-way times. Here is the new regression after this unusual point is removed:
Dependent variable is : Time
R-squared = 4.1% s= 292.6
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Variable
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Coefficient
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Intercept
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-11048.7
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Year
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6.17091
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a) In this new model, the value of is much smaller. Explain what that means in this context.
b) Now would you be willing to say that the Lake Ontario swimmers are getting faster (or slower)?