Statistics (III) ANOVA in Data Science & Machine Learning

For the last part of the Statistics series, we will cover the ANOVA, Post-hoc Pairwise Comparison, Two-way ANOVA, and R-squared. Previously, our study focused on one or two groups of subjects. How can we handle the concept of multiple groups with multiple factors? For example, the dose level and gender may impact the effectiveness of a vaccine. How can we determine whether it is statistically significant for particular combinations?