Statistical model library

Classical Statistical Tests

Compare methods in this family and review the data requirements, assumptions, implementation examples, and interpretation guidance for each.

7 models shown

Analysis of Covariance (ANCOVA)

A statistical technique that combines ANOVA and regression to compare group means while controlling for the effects of continuous covariates. It adjusts for confounding variables and increases statistical power by accounting for variance explained by covariates.

compare adjusted meanscontrol confounding variablesincrease statistical power continuous outcome

Analysis of Variance (ANOVA)

A statistical method for comparing means among three or more groups by analyzing variance components. It tests the null hypothesis that all group means are equal, and is widely used in experimental designs to determine if any statistically significant differences exist between groups.

compare meanstest group differencesevaluate treatment effects continuous outcome

Chi-Square Test

A statistical test used to determine if there is a significant association between categorical variables.

comparetest categorical outcome

Kruskal-Wallis Test

Non-parametric method for testing whether samples originate from the same distribution.

comparetest continuous outcomeordinal outcome

Mann-Whitney U Test

A non-parametric test used to determine whether two independent samples come from the same distribution.

comparetest continuous outcomeordinal outcome

Repeated Measures ANOVA

A specialized form of ANOVA designed for analyzing data when the same subjects are measured multiple times. It accounts for the correlation between repeated measurements on the same individuals, making it essential for longitudinal studies, time series experiments, or any design where measurements are taken from the same subjects across different conditions or time points.

comparetestevaluate changes over time continuous outcome

T test

A statistical test used to determine if there is a significant difference between the means of two groups.

comparetest continuous outcome

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