Chapter 4
Tests on proportions
In this chapter we present tests for the parameter of a binomial distribution. We first treat a test on the population proportion in the one-sample case. We further cover tests for the difference of two proportions using the pooled as well as the unpooled variances. The last test in this chapter deals with the equality of proportions for the multi-sample case. Not all tests are covered by a SAS procedure or R function. We give the appropriate sample code to perform all discussed tests.
4.1 One-sample tests
In this section we deal with the question, if a population proportion differs from a predefined value between 0 and 1.
4.1.1 Binomial test
| Description: | Tests if a population proportion  differs from a value  . |
| Assumptions: |
|
be denoted as “success” and 
as “failure”.
of interest is given by the proportion of successes in the population.Get Statistical Hypothesis Testing with SAS and R now with the O’Reilly learning platform.
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