Nonparametric Tests 2023
Parametric Statistics - Correct answer -Use sample statistics
to estimate population parameters requiring underlying
assumptions be met
-e.g., normality, homogeneity of variance
Nonparametric test statistics (3) - Correct answer -Don't
have the same stringent assumptions (fewer assumptions)
-Can be used when assumptions of parametric tests are not
met
-Data is ranked
Ranking Data (3) - Correct answer -These tests work on the
principle of ranking the data for each group:
-Lowest score=a rank of 1
-Next highest score = a rank of 2, and so on.
The analysis is carried on... - Correct answer the ranks
rather than the actual data
Non parametric tests and outliers - Correct answer -Instead
of being an outlier it's a rank
-Not a value
Non parametric tests and statistical power. - Correct answer
-Information about the magnitude is lost-> less power
