polynomial regression

a type of linear regression analysis in which the relationship between an explanatory or independent variable and an outcome or dependent variable is modeled as a polynomial. Polynomial regression is appropriate for expressing higher order nonlinear effects among variables (via quadratic or cubic functions such as y_i = β₀ + β₁x_i + β₂x_i² + β₃x_i³ + …) while retaining all other aspects of linear approaches.

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Psychology term of the day

February 28th 2025

common metric

a unit or scale of measurement that is applied to data from different sources. In a meta-analysis, for instance, the results from multiple studies may need to be placed on a common metric so that they may be meaningfully compared.