How to assign weights to rice production in irrigation vs No irrigation

[Makitisinde]

Hello, I am tasked with computing average yield for different schemes. Some with irrigation and others do not have irrigation. Obviously I can not combine everything since those with irrigation will most likely have higher yield. 

How can you help me to assign weights for the two sets of produce. 

We have actual weight per kilo of paddy for each of the schemes. Please help!

Thanks in advance

[Rick_SAS]

I don't think this problem requires weights. From what you've said, this sounds like a classical ANOVA design. To begin your analysis, look at the "Getting Started Example" in the PROC GLM documentation.

Your syntax will look something like this:

 proc glm data=Yield;

class Irrigation;   /* binary 0/1 variable */

model Yield = irrigation;

run;

[Makitisinde]

Thanks Rick-SAS, though I may have more questions later. Me and my colleagues feel that we have to assign weights to address the intervention difference between the different schemes.