Small Sample Tests : Tests based on:-1. Chi square (χ2) distribution 2. t- distribution 3. F- distribution
Small Sample Tests We have seen large sample tests for testing hypothesis about population mean, population proportion and population correlation coefficient. However in number of situations exact tests or small sample tests can be used for testing hypothesis about a population parameter under some assumptions. In small sample tests, the statistic follows exact sampling distribution viz. chi square (χ 2 ), t or F for sample of any size. Hence small sample tests can be regarded as exact tests. The procedure of testing the null hypothesis H0 in small sample tests is almost identical to that of large sample test. We divide these tests into three classes according to the distribution of test statistic as follows. Tests based on:- ...