How to know if two proportions are statistically significant?
March 16, 2007 7:43 AM Subscribe
How do I determine whether the difference between two or more proportions is significant?
posted by lunasol to Education (7 answers total) 2 users marked this as a favorite
I took introductory statistics last year, but I only barely passed and I can't find my notes anywhere!
Anyway, I'm doing a project that involves studying the impact of a policy on four different subsets of the population (by race: whites, blacks, Hispanics, and Asians). It does seem to affect these different groups differently, but I'm trying to remember how to test if this difference is significant. I've googled it, but the results I've found look vaguely familiar, yet incomprehensible.
Does anyone know of a simple explanation online, or can explain it to me simply? Specifically, I have information on whether or not a policy affects these groups, so it's expressed as proportions.
I'm looking for help at school, too, but I might not get it till after I need to submit my draft!