Instrumental Variable Test

[Eliana]

Hello everyone, i'm working on "Using Geographic Variation in College Proximity to Estimate the Return to Schooling" paper dy D.Card.

I get all the results but now i have to execute as many tests (for the IV-Regressions) as possible and interprete the outcomes/effects.

I'm new in this enviroment and i have no idea how to test and interprete the outcomes

I'm using Stata9.
Is there someone who can help me?
Thanks!

[ben earnhart]

Eliana --

You will increase your chances of getting an answer if you get your name fixed to fname lname format, as per the FAQs. Also, we have no idea what models you ran, nor what tests you wish to run. If you post some of your output, and specify what kind(s) of tests you need, it might make it possible to help, but for now, seems simply impossible. If you post output, paste it into "code" tags -- hit the "A" above where you type, which will bring out a menu. Choose "#" to get code tags, and paste between those.

Good luck.

[Eliana]

This is my docile,can u have a look and help me. I have to test if the instrumental variables are valid or not and how weak are they.
Thanks