análisis de varianza (ANOVA)

Análisis de varianza (ANOVA) is a statistical method used to compare the means of three or more groups to determine if at least one group is different from the others. Rather than comparing each group directly, ANOVA assesses overall variation among groups based on sample data. It helps researchers understand if different treatments, conditions, or categories yield significantly different results, aiding in decision-making across various fields like medicine, psychology, and social sciences. If ANOVA indicates a significant difference, further tests can pinpoint which groups differ.