Measures of Association

These flashcards focus on key terms and definitions related to measures of association in statistics.

Correlation

A statistical procedure used to describe the strength and direction of the relationship between two factors.

Correlation Coefficient

A strategy for quantifying the relationship between variables.

Pearson's r

A measure of the linear relationship of two factors measured on an interval or ratio scale.

Point Biserial Correlation Coefficient

A measure of the direction and strength of the linear relationship between one continuous factor and a dichotomous factor.

Linear Regression

A statistical procedure used to determine the equation of a regression line to predict values of one factor based on known values of a second factor.

Null Hypothesis

The hypothesis that there is no linear relationship between the variables.

Alternative Hypothesis

The hypothesis that indicates the presence of a relationship between variables (either non-directional or directional).

Residuals

The distance between the observed y-value and predicted y-value in regression analysis.

Coefficient of Determination

Proportion of the total variance explained by the predictor variable.

Homoscedasticity

The assumption that for each possible x-value, the y-variable has the same variance in the population.