One Formula for the Correlation Between Two Dichotomous Variables Is

question 59

Multiple Choice

One formula for the correlation between two dichotomous variables is

• A) Spearman's rank order formula.
• B) the point biserial correlation.
• C) the phi coefficient.
• D) the biserial correlation.

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Definitions:

Geographic Isolation

A form of evolutionary separation where populations of the same species become physically divided by geographical barriers leading to genetic divergence.

Adaptive Radiation

The evolution of a large number of related species from an unspecialized ancestral organism.

Kaibab Squirrels

A species of squirrel that is native to the North Rim of the Grand Canyon in the United States, known for its distinctive tufted ears.

Abert Squirrels

A species of tree squirrel named for Colonel John James Abert, noted for their distinctive ear tufts and dependence on ponderosa pine trees for habitat and food.