In Testing the Difference Between Two Proportions Using the Normal

question 31

True/False

In testing the difference between two proportions using the normal distribution, we may use either a one-tail chi-square test or two-tail Z test.

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Definitions:

Phi Coefficient

A metric indicating the strength and direction of the relationship between two dichotomous variables, with values spanning from -1 to 1.

Partial Correlation

A measure of the relationship between two variables, controlling for the effect of one or more other variables.

Mediating Variable

A variable that explains the relationship between the independent variable and the dependent variable in a statistical model.

Coefficient Of Determination

The amount of variance in one variable that is accounted for by the variance in another variable.