stats_type_switch: Switch function to determine which type of statistics is to be run.
Description
Takes in all allowed characters describing the needed type of
test and converts it into standard terms to reduce the complexity of
conditional statements.
Usage
stats_type_switch(stats.type)
Arguments
stats.type
Character describing the needed type of statistics (e.g.,
"parametric", "nonparametric", "robust", `"bayes"``, etc.).