A Nonparametric Method to Compare Two Populations, When the Samples

question 124

Multiple Choice

A nonparametric method to compare two populations, when the samples are matched pairs and the data are ordinal, is the:

• A) Wilcoxon signed rank sum test
• B) sign test
• C) Wilcoxon rank sum test
• D) matched pairs t-test
• E) chi-square test

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Definitions:

Chickenpox

A contagious disease characterized by itchy, red spots that turn into fluid-filled blisters and eventually scabs, caused by the varicella-zoster virus.

Blister

A small bubble on the skin filled with serum, lymph, or blood, typically caused by friction, burns, or other damage to the skin surface.

Prokaryotic Cell

A type of cell lacking a distinct nucleus and other organelles, found in organisms of the domains Bacteria and Archaea.

Bacterium

A domain of single-celled, prokaryotic organisms that are often characterized by cell walls, and can be found in a vast array of environments.