Contributions

The row points overview shows the contributions of the row points to the inertia of the dimensions and the contributions of the dimensions to the inertia of the row points. If all points contributed equally to the inertia, the contributions would be 0.043. Healthy and low fat both contribute a substantial portion to the inertia of the first dimension. Men and tough contribute the largest amounts to the inertia of the second dimension. Both ugly and fresh contribute very little to either dimension.

Figure 1. Attribute contributions
Table with image categories in the rows and contribution in each dimension in the columns

Two dimensions contribute a large amount to the inertia for most row points. The large contributions of the first dimension to healthy, new, attractive, low fat, nutritious, and women indicate that these points are very well represented in one dimension. Consequently, the higher dimensions contribute little to the inertia of these points, which will lie very near the horizontal axis. The second dimension contributes most to men, premium, and tough. Both dimensions contribute very little to the inertia for South Australian and ugly, so these points are poorly represented.

The column points overview displays the contributions involving the column points. Brands CC and DD contribute the most to the first dimension, whereas EE and FF explain a large amount of the inertia for the second dimension. AA and BB contribute very little to either dimension.

Figure 2. Brand contributions
Table with brands in the rows and contribution in each dimension in the columns

In two dimensions, all brands but BB are well represented. CC and DD are represented well in one dimension. The second dimension contributes the largest amounts for EE and FF. Notice that AA is represented well in the first dimension but does not have a very high contribution to that dimension.

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