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Test results of factor characteristic roots, variance contribution rate, and variance cumulative contribution rate.
| Factor | Characteristic root | Cumulative contribution rate of variance (%) |
|---|---|---|
| 1 | 3.586 | 15.591 |
| 2 | 3.566 | 31.097 |
| 3 | 2.648 | 42.612 |
| 4 | 2.556 | 53.724 |
