Analysis of three difference samples


New Member
Hi there,

I have surveyed three separate populations frome which I have obtained fairly representative samples. One was a stratified sample (as the population was quite large), and the others two generated close to a 55% response rate from the entire populations.

I would like to do a comparative analysis of percentages and other scores across the three samples to see if there is an significant difference between them. Each survey instrument collected the same information from each population. I would appreciate it if you could advise me what statisical tests are appropriate for this kind of analysis.

Thanx very much.