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April 22, 2009
It is E370 Time!!!
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Announcements
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WarmUps Questions
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Today’s Goals: You should be able to
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calculate SSE.
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calculate SST.
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calculate SSR.
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calculate R
2
.
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interpret R
2
.
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interpret Excel regression output.
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Next Time~~Dummy Variables
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Announcements
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Hypothesis Tests from Class:
The answers to the hypothesis test
problems worked on in class can be found under Class Announcements.
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In response to student queries, the information about the lab exam has
been augmented.
For example:
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corresponding information in the course workbook has been noted.
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the exclusion of any Least Squares material has been emphasized.
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discussion of one versus twotailed tests.
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Airfare' = 110.34 + 0.16*(Miles)
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What is the meaning of “110.34"?
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What is the meaning of “0.16"?
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What is the predicted airfare for a destination 300 miles from Baltimore?
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Does
Airfare' = 110.34 + 0.16*(Miles)
do a better job of predicting airfares from Baltimore than
Mean Airfare = $221.67
?
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 Winter '09
 STAFF
 Economics, Regression Analysis, Meaning of life, Rsquared value, excel regression output, $221.67

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