Learn what analysis of variance (ANOVA) is, how it works, and when to use it. See how it helps compare means across multiple data groups in statistics and research.

Discover how to calculate variable overhead spending variance, its impact on costs, and examples of favorable vs. unfavorable variances in business operations.

Among the most common types of experiments are comparative studies that contrast outcomes under different conditions such as male versus female, placebo versus drug, or before versus after treatment.