Testing Difference Between Two Variables. One categorical with 2 independent groups. The Wilcoxon Signed-Rank Test is used to see whether observations changed direction on two sets of ordinal variables.
Tests the difference between the same variable from different populations eg comparing dogs to cats. T-tests are used when comparing the means of precisely two groups eg. All we need to do now is to fit the model.
Our dataset contains the three variables of Input Condition and Output.
Then create a categorical variablethat identifies the condition for each observation. The red line marks the value that corresponds to P-value of 005. Tests the difference between the same variable from different populations eg comparing dogs to cats. The Wilcoxon Signed-Rank Test is used to see whether observations changed direction on two sets of ordinal variables.
