The Spearman's is also referred to as a rank-order correlation because it is applied to ordered data that do not meet the conditions necessary to use Pearson's correlation. This is a non-parametric test and measures the strength and direction of the association between two variables, where at least the two variables are measured on an ordered scale. The Spearman's correl
In this guide, we will show you how to run the 2 related samples sign ranked test in SPSS. The test is used to determine if there is a median difference between two related samples. The Wilcoxon test is an alternative to the paired sample t-test, thus, the test is applied when your samples do not meet the assumptions of normality. Your data need to be dependent because they ar
The test is used to determine whether the sample data comes from a population with a specified mean. The one-sample t-test applies to situations where the population standard deviation is not known, although it is expected that the distribution of the data should be approximately normal. This population mean is always hypothesized as it is alway