The median test for independent medians tests if two or more populations have equal medians on some variable. That is, we’re comparing 2(+) groups of cases on 1 variable at a time. Rating Car Commercials We’ll demonstrate the median test on adratings.sav. This file holds data on 18 respondents who rated 3 different car commercials on […]
The binomial test is the most simple statistical test there is. Understanding how it works shouldn’t be too hard and will help you understand other statistical tests more easily too. So what is it? A binomial test is a procedure for evaluating if some population proportion is x. For example, a marketeer has to make sure that 50% […]
SPSS binomial test is used for testing whether a proportion from a single dichotomous variable is equal to a presumed population value. The figure illustrates the basic idea. SPSS Binomial Test Example A biologist claims that 75% of a population of spiders consist of female spiders. With a lot of effort he collects 15 spiders, 7 of […]
SPSS nonparametric tests are mostly used when assumptions aren’t met for other tests such as ANOVA or t-tests.* Second, nonparametric tests are suitable for ordinal variables too. In rare cases they may have more statistical power than standard tests. Not sure which (nonparametric) test to use? You’ll quickly find the answer in Simple Overview Statistical Comparison Tests. Nonparametric Tests – One Sample SPSS Kolmogorov-Smirnov Test for […]
