topic Re: independance test-2 quantitatives variables in SAS Procedures

independance test-2 quantitatives variables

deleted_user — Sun, 05 Oct 2008 18:22:17 GMT

Hi all

I wanna do a test seeing if my two quantitatives variables are independant or not.
The regression straight equation is alpha+beta*x=y.
The null hypothesis H0 states : Beta equals zero.

How to translate that into SAS ?

I would like to use the PROC REG or PROC GLM.

Thank you

Re: independance test-2 quantitatives variables

Doc_Duke — Mon, 06 Oct 2008 20:06:34 GMT

In REG or GLM, x is the independent variable and y is the dependent variable. The model tests the hypothesis that the x variable is linearly predictive of the y variable.

This can be looked at as a test of linear independence, but it is not a test of general independence; it's not sensitive to some non-linear relationships in the data.

CORR will look at monotonic relationships (in the Spearman or Kendall's statistics), but it will still miss a "bathtub" relationship.

So, do graphs to look at your data too.

Doc Muhlbaier
Duke

Re: independance test-2 quantitatives variables

deleted_user — Wed, 08 Oct 2008 08:38:08 GMT

Basically what I have to do is to test if 2 variables are independant or not.
Gonna study your answers.
Thanks Message was edited by: babaorumi