Nested Test Tool
Nested Test Tool
User Role Requirements
User Role* | Tool/Feature Access |
|---|---|
Full User | ✓ |
Basic User | X |
*Applies to Alteryx One Professional and Enterprise Edition customers on Designer versions 2025.1+.
The Nested Test tool examines whether two models, one of which contains a subset of the variables contained in the other, are statistically equivalent in terms of their predictive capability. The larger of the 2 models is referred to as the "full" model, while the model that contains a subset of the variables is referred to as the "reduced" model. In the statistics literature, the "reduced" model is often called the "null" model, while the "full" model is called the "alternative" model.
In the case of 2 linear regression models, the test is conducted using an F-test*. For 2 GLM family models, including count regression, gamma regression, and logistic regression, the test is conducted using a likelihood ratio test**.
Important
This tool is not automatically installed with Designer. To use it, download and install the Alteryx Predictive Tools for your version of Alteryx Designer. Depending on your Alteryx account type, you have two download options:
Download from Alteryx One
Download from Alteryx Licensing & Downloads Portal.
For more information, go to Download and Use Predictive Tools
One Tool Example
Nested Test has a One Tool Example. Go to Sample Workflows to learn how to access this and many other examples directly in Alteryx Designer.
Connect Inputs
The output stream from either a Linear Regression tool or a GLM family tool (Count Regression tool***, Gamma Regression tool, or Logistic Regression tool) used to create the "full" model, the one with a greater number of variables. The stream can be entered as any of the three inputs.
The output stream from either a Linear Regression tool or a GLM family tool (Count Regression tool***, Gamma Regression tool, or Logistic Regression tool) used to create the "reduced" model, the one with a subset of the variables included in the "full" model. The stream can be entered as any of the three inputs.
The Alteryx data stream that was used to create both the "full" and "reduced" models. The stream can be entered into either side of the tool.
*https://en.wikipedia.org/wiki/F-test
**https://en.wikipedia.org/wiki/Likelihood-ratio_test
***Quasi-poissonmodel not supported.
Configure the Tool
This tool has no configuration options.