ANOVA (Analysis of Variance)

ANOVA, or Analysis of Variance, is a statistical method used to compare the means of three or more groups to see if there are significant differences among them. Instead of comparing each pair of groups, ANOVA assesses overall variance within groups and between groups simultaneously. For example, if you want to see if different teaching methods lead to different student test scores, ANOVA helps determine if at least one method results in a different average score, indicating that teaching methods may have different effects. This helps researchers make informed decisions based on the data.