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November 29, 2007
MT 2 Answers
Posted by bparke at 11:39 PM | Comments (0)
November 27, 2007
Midterm 2
Posted by bparke at 05:00 PM | Comments (0)
November 20, 2007
Midterm 2 Summer 2007 and More
We reviewed the "required elements" to a t-test question that asks for details.
We elected not to repeat the Cobb-Douglas questions, which are available in a couple of other places. What follows is some extra material.
Posted by bparke at 05:01 PM | Comments (0)
November 15, 2007
Review
Left-out variables, one more time, with feeling:
Bonus material (not on exam):
Sometimes, a regression with a lower R-squared is "better."
Proof you cannot make sense out of the t ratio with one dummy variable picked to be left out:
Posted by bparke at 05:02 PM | Comments (0)
November 13, 2007
Q & A
Testing for constant returns to scale and technological progress for the Cobb-Douglas production function:
Elasticities:
Possible heteroskedasticity corrections:
Posted by bparke at 10:34 PM | Comments (0)
Simultaneity
Posted by bparke at 10:28 PM | Comments (0)
November 08, 2007
Discussion of Heteroskedasticity and Serial Correlation
We discussed these two topics, but the proctor for the exam in the 12:30 class erased much of the board before I started taking pictures.
Posted by bparke at 09:59 PM | Comments (0)
November 01, 2007
Heteroskedasticity
Posted by bparke at 04:22 PM | Comments (0)