Two Stage Least Squares - an introduction

[MrThefonzzi]

You may have saved me, academically.
Everyone in my course uses your videos, btw ;)
Thanks!

[flavianepomuceno]

Thank you very much, Ben! You helped me a lot. Very objective and clear. I will love to see more of your videos.

[mmad]

Hi, I got a bit confused, could you explain why we include z1 in the first stage regression? Why do we regress x^ also on the other covariates in the initial model and not only on the instruments for it?

[MrEnjoyBeats]

Hello, I have a regression equation and I'm supposed to check that there's no causality from the Y to the independent variables (X). I used the lagged variables from the X's as instrument variables in the 2SLS-option in a program called Eviews. I got a negative value for R-squared. How do I interpret that?

[rafaelkovashikawa]

almost 3 years after graduation here i meet again my old friend ben...

[gabrielwong]

Ben will you ever do this video in matrix form? I get the idea now but just cant get my head round in matrix form!

[johannes]

This is incredibly helpful in understanding this topic!

[mrsahmad]

How and when two stage least square is preferred over ordinary least squre

[emmq]

ben lambett my man!!!! helping me out again and again it dont stop. moscow17 or zone 2? haha good shit

[angelamilton]

Still waiting for someone to use this least squares on a problem question

[liketheduck]

I appreciate the high def. But the writing is still blurry when full screen, even with the highest def available. 

[yunpengdeng]

what's the definition of over identification

[JamesMantis]

wouldnt it be two "stages"? why is it two stage

[jeffreyanderson]

I love you. Will you marry me? just kidding, because I really love your videos. You made my life much easier.