# Test on the properties of two betas?

I have a set of observations. When I do an OLS I get a $\beta$. After I remove some values I also get a $\beta$. Now I want to test if the properties of two betas are the same? Please give me a hint how to do that?

• I think this is gonna help you. An maybe this too. May 23 '13 at 8:46