What is the AOV() function in R?
What is the aov () function in R? The aov () function is used to fit the model analysis of variance by the ‘lm’ call for each stratum. formula: a formula specifying the model. data: a data frame. The default is NULL. How to use the aov () function in R?
What does AOV do if f is a factor variable?
If f is numeric rather than a factor variable, aov () will report the results of a linear regression in ANOVA format, which may surprise inexperienced users. The aov () function uses Type I (sequential) Sum of Squares. This type of Sum of Squares tests all of the (main and interaction) effects sequentially.
When do we use AOV and ANOVA?
We use aov () when we would like to fit an ANOVA model and view the results in an ANOVA summary table. We use anova () when we would like to compare the fit of nested regression models to determine if a regression model with a certain set of coefficients offers a significantly better fit than a model with only a subset of the coefficients.