Publication date: 08/13/2020

Show Adjusted Inertia

The principal inertias of a Burt table in MCA are the eigenvalues. The problem with these inertias is that they provide a pessimistic indication of fit. Benzécri proposed an inertia adjustment. Greenacre argued that the Benzécri adjustment overestimates the quality of fit and proposed an alternate adjustment. Both adjustments are calculated for your reference. See Adjusted Inertia.

Inertia

Lists the square of the singular values, reflecting the relative variation accounted for in the canonical dimensions.

Adjusted Inertia

Lists the adjusted inertia according to either the Benzécri or Greenacre adjustment.

Percent

Portion of adjusted inertia with respect to the total inertia.

Cumulative Percent

Shows the cumulative portion of adjusted inertia. If the first two singular values capture the bulk of the inertia, then the 2-D correspondence analysis plot is sufficient to show the relationships in the table.

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