Select menu: Stats | Multivariate Analysis | Multiple Correspondence Analysis
Correspondence analysis is an ordination technique used to analyse relationships between two categorical variables. Ordination techniques aim to represent the relationships approximately, in a reduced number of dimensions, to make them easier to study e.g. with graphs. Multiple correspondence analysis provides a similar analysis for more than two variables.
- After you have imported your data, from the menu select
Stats | Multivariate Analysis | Multiple Correspondence Analysis.
- Fill in the fields as required then click Run.
This lists data structures appropriate to the current input field. It lists variates for use in specifying the data. Double-click a name to copy it to the current input field or type the name.
Used to enter the names of the factors to be analysed. You can transfer multiple selections from Available data by holding the Ctrl key on your keyboard while selecting items, then click to move them all across in one action. If the data are referenced within a pointer you can enter the pointer name directly followed by its elements within squared brackets, e.g. mydata[1,2].
A variate defining frequencies (or number or replications) for each unit for the factors supplied in the Data. Supply the data in this form can be useful for large data sets.
|Run||Run the analysis.|
|Cancel||Close the dialog without further changes.|
|Options||Opens a dialog where additional options and settings can be specified for the analysis.|
|Defaults||Reset options to the default settings. Clicking the right mouse on this button produces a pop-up menu where you can choose to set the menu using the currently stored defaults or the Genstat default settings.|
|Store||Opens a dialog to specify names of structures to store the results from the analysis.|
|Biplot||Opens a dialog to produce a biplot of the results from the analysis.|
|Pin||Controls whether to keep the dialog open when you click Run. When the pin is down the dialog will remain open, otherwise when the pin is up the dialog will close.|
|Restore||Restore names into edit fields and default settings.|
|Clear||Clear all fields and list boxes.|
|Help||Open the Help topic for this dialog.|