Regression Tests and Models

PCA dimension reduction, validated component selection and regression Principal Component Regression: Formula, Interpretation, Python, R, SPSS and Excel Guide Principal Component Regression turns correlated predictors into…

Curved relationships estimated with linear-model machinery Polynomial Regression: Formula, Interpretation, Python, R, SPSS and Excel Guide Polynomial Regression extends a linear model by adding squared, cubic,…

Supervised dimension reduction for correlated and high-dimensional predictors Partial Least Squares Regression: Tutorial, Interpretation, Python, R, SPSS and Excel Guide Partial Least Squares Regression builds outcome-focused…

Repeated observations, within-unit change, and between-unit differences Panel Regression: Formula, Interpretation, Fixed Effects, Python, R, SPSS and Excel Guide Panel Regression analyses repeated measurements from the…

Continuous-outcome modelling, prediction, and adjusted effects Ordinary Least Squares Regression: Formula, Interpretation, SPSS, Python, R and Excel Guide Ordinary Least Squares Regression estimates the relationship between…

Ordered-category modeling with cumulative logits Ordinal Logistic Regression: Formula, Interpretation, SPSS, Python, R and Excel Guide Ordinal Logistic Regression models an outcome whose categories have a…

Count-data modelling with a log link and overdispersion logic Negative Binomial Regression: Formula, Interpretation, SPSS, Python, R and Excel Guide Negative Binomial Regression is a count-data…

Curved outcome modelling with transparent model comparison Nonlinear Regression: Formula, Interpretation, SPSS, Python, R and Excel Guide Nonlinear Regression models relationships that bend, flatten, accelerate or…

Three-category outcome modelling with class probabilities Multinomial Logistic Regression: Formula, Interpretation, SPSS, Python, R and Excel Guide Multinomial Logistic Regression models a categorical outcome with more…

One continuous outcome, several predictors and conditional effects Multiple Linear Regression: Formula, Interpretation, SPSS, Python, R and Excel Guide Multiple Linear Regression predicts one continuous outcome…