| Variables | Mean | St.d | 1 | 2 | 3 | 4 | 5 |
| 1) QM infrastructure practices | 4.213 | 0.932 | 1 |
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| 2) Core QM practices | 4.521 | 0.813 | 0.278** | 1 |
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| 3) Market turbulences | 4.081 | 0.678 | 0.233** | −0.109* | 1 |
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| 4) Product innovation | 4.520 | 0.912 | 0.324** | 0.192* | 0.205** | 1 |
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| 5) Process innovation | 4.453 | 0.834 | 0.381** | 0.183* | 0.180* | 0.349** | 1 |