Correspondence analysis

Correspondence analysis is a technique for summarizing the data in a large table as a scatterplot, making it easier to identify the patterns.

To create a correspondence analysis map in Q:

1. Create the table you want to analyze.
2. Select Create > Dimension Reduction > Correspondence Analysis of a Table.
3. Choose your table under Input table(s).
4. Click Calculate.

For more information on the options that are available, see Dimension Reduction - Correspondence Analysis of a Table.

Other related methods are also available from this part of the Create menu:

• Correspondence Analysis of a Square Table
• Multiple Correspondence Analysis

A webinar on using the correspondence analysis of a table is available here.

Legacy Options

In older versions of Q, the option for creating a correspondence analysis was to use Create > Map (now available as Create > Dimension Reduction > Map). This option exports the correspondence analysis to Office. See Category:Maps for more detail.

Learning More

For a simple introduction to how correspondence analysis works, see our blog post: How Correspondence Analysis Works.

For more details, see our other posts:

• How to Interpret Correspondence Analysis Plots
• Understanding the Math of Correspondence Analysis