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R-factors: Difference between revisions
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== Definitions == | == Definitions == | ||
=== Data quality indicators === | === Data quality indicators === | ||
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=== Model quality indicators === | === Model quality indicators === | ||
* R and R<sub>free</sub> : the formula for both is | * R and [[iucr:Free_R_factor|R<sub>free</sub>]] : the formula for both is | ||
<math> | <math> | ||
R=\frac{\sum_{hkl}\vert F_{hkl}^{obs}-F_{hkl}^{calc}\vert}{\sum_{hkl} F_{hkl}^{obs}} | R=\frac{\sum_{hkl}\vert F_{hkl}^{obs}-F_{hkl}^{calc}\vert}{\sum_{hkl} F_{hkl}^{obs}} | ||