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.

The Factorial ANOVA task enables you to perform an analysis of variance when you have multiple classification variables. In this example, a factorial model is specified, and a plot of the two-way ...

Discover how efficiency variance reveals the gap between expected and actual inputs in production and its impact on labor, materials, and costs.

Facilities that focus on manufacturing and production track two kinds of costs: fixed costs and variable costs. The variable costs are those that change when production levels change: raw materials, ...

The One-Way ANOVA task enables you to perform an analysis of variance when you have a continuous dependent variable and a single classification variable. For example, consider the data set on air ...

The first step in using ANOVA is to define a clear and specific research question that you want to answer. The research question should involve one or more independent variables (factors) that you can ...

Many finance teams treat variance analysis as a box-checking exercise: Set a threshold, flag the swing, move on. That’s why so many controllers spend days chasing noise while risks slip through. It’s ...

Companies regularly analyze sales variances to explain revenue performance over a monthly, quarterly or yearly accounting cycle. The resulting sales variance explanations help firms isolate problems ...