Showing posts with label exact. Show all posts
Showing posts with label exact. Show all posts

Wednesday, January 26, 2011

Inference for proportions in small samples

Large sample approximations do not work well in a small sample setting. Exact tests have to be developed for better estimation in that case.

Since we know X (positive cell count for response) follows binomial, without making normal approximation, we can go for exact inference, by calculating the confidence intervals from the quantiles of a binomial distribution.