---
title: Two-Way ANOVA in Minitab 17
description: Two-Way ANOVA in Minitab 17
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# Two-Way ANOVA in Minitab 17
Minitab Blog Editor | 7/16/2014
Topics: [Data Analysis](https://blog.minitab.com/en/blog/tag/data-analysis), [Statistics](https://blog.minitab.com/en/blog/tag/statistics)
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After upgrading to the latest and greatest version of our statistical software, Minitab 17, some users have contacted tech support to ask "Wait a minute, where is that Two-Way ANOVA option in Minitab 17?"
The answer is that it’s not there. That’s right! The 2-Way ANOVA option that was available in Minitab 16 and prior versions was removed from Minitab 17. Why would this feature be removed from the new version? Shouldn’t the new version have more features instead of less?
Two-Way ANOVA was removed from Minitab 17 because you can get the same output by using the [General Linear Model](http://support.minitab.com/en-us/minitab/17/topic-library/modeling-statistics/anova/basics/what-is-a-general-linear-model/) option in the [ANOVA](https://blog.minitab.com/blog/understanding-statistics/you-dont-need-a-weatherman-using-anova-graphs-and-regression-to-fact-check-the-forecasts?hsLang=en)menu. Removing the separate 2 way ANOVA menu choice reduces redundancy and creates a more similar workflow for the linear models options.
Let's look at an example that shows how to replicate the Two-Way ANOVA output from Minitab 16 using Minitab 17.
The data shown below is a sample dataset used for 2-Way ANOVA in Minitab 16: *You as a biologist are studying how zooplankton live in two lakes. You set up twelve tanks in your laboratory, six each with water from one of the two lakes. You add one of three nutrient supplements to each tank and after 30 days you count the zooplankton in a unit volume of water. You use two-way ANOVA to test whether there is significant evidence of interactions and main effects.*
The Two-Way ANOVA option in Minitab 16 yields the following output:
To replicate the Two-Way ANOVA output from Minitab 16 using Minitab 17, use **Stat** > **ANOVA** > **General Linear Model** > **Fit General Linear Model**:
Using GLM, we can enter our response column (Zooplankton) in the **Responses** field and our two factors in the **Factors** field without the need to specify one factor as the row and one as the column factor:
Minitab 16's Two-Way ANOVA option also shows the two-factor interaction, so in Minitab 17 we need to manually add the interaction by clicking the **Model** button in the GLM dialog box. There we can highlight the factors listed on the left side (step 1 below); when we do that, the **Add** button on the right will become available. To add the interaction, click **Add** (step 2) and the interaction will be shown at the bottom under **Terms in the model** (step 3).
Click **OK** in the Model dialog box to return to the main GLM dialog.
By default, Minitab 17 will provide more detailed output than Two-Way ANOVA in Minitab 16. To make the results match, we can remove the additional output by clicking the **Results** button within the GLM dialog box. Unchecking the additional options so that only **Analysis of variance** and **Model summary** are selected (as shown below) will make the output match Minitab 16’s Two-Way ANOVA results.
The results from General Linear Model in Minitab 17 now match the output from Two-Way ANOVA in Minitab 16:
If you're wondering how to do something with Minitab, our [technical support team](http://www.minitab.com/support/) is always ready to help you. Our technical support representatives are knowledgeable in statistics, quality improvement, and computer systems. Best of all, our assistance is free.
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