Correlation and Regression

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8 Terms

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Correlation

Co-relationship of two variables

  • How one variable changes in relation to another

  • Does not equal causation

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Pearson’s Correlation Coefficient (r):

strength of linear relationship between two continuous variables

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Spearman Rank-Order Correlation Coefficient (rs):

Nonparametric alternative to Pearson's

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Regression

Ability of one or more variables to predict another variable

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Simple (Univariable) Regression

Relationship between a single dependent and independent variable

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Coefficient of Determination (r2)

How well the independent variable (x) predicts the dependent variable (y^)

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Multiple (Multivariable) Regression

Regression model in which there is a continuous independent variable and two or more continuous dependent variables

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Logistic Regression

Nonparametric regression test, used when the dependent variable is dichotomous