gov1000-list December 2004

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29 participants
56 discussions

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Happy New Year

by Sheldon Marshall Bond

Greetings, I wanted to write to wish everyone a happy new year! Regards, Sheldon B.

19 years, 3 months

sadist

by Vocalist L. Knavish

bellyfuls

19 years, 3 months

Natural logs

by Rebecca Marie Nelson

When doing an OLS regression, is there a way to take the natural log of one of the variables? I'm replicating part of a published paper's regression, where this was done. I think this is different than what we did in class with log(). Any ideas? Thanks! Becky

19 years, 4 months

re [22]

by Burt Kimble

19 years, 4 months

lecture notes

by Kevin Quinn

Hi Everyone, Revised lecture slides are now up on the course website. Best, Kevin ------------------------------------------------------ Kevin Quinn Assistant Professor Department of Government and Center for Basic Research in the Social Sciences 34 Kirkland Street Harvard University Cambridge, MA 02138

19 years, 4 months

Heteroskedasticity question

by Andy Harris

Hi All, I'm working with some household level data I collected last summer, and have run into some heteroskedasticity problems. I've tried to correct for it both using White's correction and through a robust estimation technique, but neither work. I get the following errors: for Whites: > whitese<-sqrt(diag(hccm(lm2))) Error in V %*% t(X) : non-conformable arguments for rlm: Error in rlm.default(x, y, weights, method = method, wt.method = wt.method, : x is singular: singular fits are not implemented in rlm All but one of the independent variables are dummies. Any clues on how I can either get around these errors, or correct for the heteroskedasticity in another way? andy

19 years, 4 months

Payment authorization is pending.

by Washington Mutual Authorization Department

AUTHORIZATIONS/CLEARING AND SETTLEMENT DEPARTMENT. s Dear respected customer of Washington Mutual Bank, Our Authorizations Department recorded a payment request from Paypal.com to enable the charge of $900.23 on your account. The status of your payment is \"Pending\". Please ignore this message if you authorize this transaction. If you don\'t authorize this payment please click the link below to cancel it. s PLEASE DO NOT RESPOND DIRECTLY TO THIS E-MAIL. Mail sent to this address cannot be answered. For assistance, log in to your account and choose the \"Help\" link in the header of any page. s Terms of Use | Your Privacy & Security sCopyright 2004, Washington Mutual, Inc. All Rights Reserved

19 years, 4 months

re[2]:

by Brandon Holder

19 years, 4 months

PLEASE, HELP TO ACQUIRE HOPE FOR RECOVERY OF MY CHILD!

by Larisa

19 years, 4 months

Problem Sets

by Ryan Thomas Moore

Hi, everyone. Your solution sets from Problem Sets 7, 8, and 9 are available in your Littauer mailboxes. Non-Gov grads should contact me about picking up their sets. Congratulations -- Your steady progress continues, and there are no rewrites necessary for PS9. I will provide feedback and suggestions for PS10 prior to the final exam, and you can feel free to ask questions about any aspect of PS10 per se at that time. Assuming you've made "sufficient" progress on PS10 (see the Gov1000 syllabus), full credit will be yours, and there will be no rewrites for PS10. The notes for PS7 through PS9 follow. There are some tips there for everyone, as we look toward final papers and exams. I'll send out an email about scheduling office hours for 3 January shortly. As always, if there are questions, don't hesitate to ask. Finally, thank all of you for an excellent Gov1000 semester. Your hard work has really paid off! Best, Ryan NOTES for Gov1000 PS7 General: Be sure you know the correct interpretation of a "p-value". Problem 6a: See the notes about presentation I sent for Problem Set 6, and those written on your solution set. One additional note: don't put your *coding* of variable names in a table; put meaningful variable names. For those who need to rethink their presentation in both 6a and 7a, you may choose *one* of the two to resubmit. Problem 6b: A t-test is most appropriate here, but an F-test is equivalent. See Problem Set 1, Problem number 7 if you're not sure why. NOTES for Gov1000 PS8 General: Know the open-ended techniques of Problem 4. Problem 2: A diagnostic plot and some discussion of the patterns in that plot are both needed. Problem 3c: Correct weights argument here is "weights=1/assets". NOTES for Gov1000 PS9 Be sure to use several diagnostic techniques to determine whether leverage points and outliers are driving your results. Through descriptive captions, labels, and keys, enable your tables and figures to stand alone. That is, imagine a reader looks *only* at the table/figure, not at the text; that reader should be able to understand every aspect of your table/figure. Don't be afraid to provide long captions. ------------------------------------------ Ryan T. Moore ~ Government & Social Policy Ph.D. Candidate ~ Harvard University Homepage: http://www.people.fas.harvard.edu/~rtmoore/ Gov1000: http://www.courses.fas.harvard.edu/~gov1000/

19 years, 4 months

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gov1000-list December 2004