Nonparametric Tests
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
