Publication date: 08/13/2020

Correspondence Analysis Options

The reports available under Correspondence Analysis are determined by the type of analysis that you conduct. Several of these reports are shown by default.

Show Plot

Shows the two-dimensional cloud of categories in the plane described by the first two principal axes. This plot appears by default. The plot uses isometric scaling.

Show Detail

Provides the details of the analysis including the singular values, inertias, ChiSquare statistics, percent, and cumulative percent. This report appears by default. See Show Detail.

Show Adjusted Inertia

Provides reports of the Benzecri and Greenacre adjusted inertia. See Benzécri (1979) and Greenacre (1984). This option is not available when there are one or more X variables. See Show Adjusted Inertia.

Show Coordinates

Provides a report of up to the first three principal coordinates for the categories in the analysis, as appropriate. See Show Coordinates.

Show Summary Statistics

Provides a report of the summary statistics, Quality, Mass, and Inertia, for each category in the analysis. See Show Summary Statistics.

Show Partial Contributions to Inertia

Provides a report of the contribution of each category to the inertia for each of up to the first three dimensions. See Show Partial Contributions to Inertia.

Show Squared Cosines

Provides a report of the squared cosines of each category for each of up to the first three dimensions. The report includes a bar chart that shows, for each level of each Y variable, the squared cosine values for each of up to the first three dimensions. See Show Squared Cosines.

Cochran’s Q Test

(Available only when all of the Y variables have the same set of only two levels and the X variable has a unique value for each row.) Provides Cochran’s Q statistic, which tests that the marginal probability of a specific response is unchanged across the Y variables. Cochran’s Q statistic is a generalization of McNemar’s statistic for more than two response variables. See Agresti (2013). See Cochran’s Q Test.

3D Correspondence Analysis

Shows the three-dimensional cloud of categories of the Y, X, and Z variables in the space described by the first three principal axes. This option is not available if there are less than three dimensions.

Save Coordinates

Saves the principal coordinates to one or more JMP data tables. Column coordinates, row coordinates, supplementary column coordinates, and supplementary row coordinates are saved to separate JMP data tables. You can choose how many columns to save.

Save Coordinate Formula

Saves formula columns to the data table for the principal coordinates in multiple dimensions. The value for each observation is the average of the coordinates for the Y variables scaled by the singular value for each dimension. You can choose how many columns to save.

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