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sci.calibration-gauge-R-and-R Calculator
Calculates gauge repeatability and reproducibility (gauge R&R) as a percentage of total part variation from ANOVA of measurement system data. Gauge R&R < 10% is acceptable; 10–30% is marginal; > 30% is unacceptable — it decomposes measurement error into repeatability (same operator) and reproducibility (different operators).
Inputs
Ev Pct
Reference formula or conversion factor shown for context.
Av Pct
Reference formula or conversion factor shown for context.
Pv Pct
Reference formula or conversion factor shown for context.
Ndc
Count of items or occurrences.
Results
Gauge R&R (% of total variation)
The combined total across all inputs and components.
GRR (combined EV+AV)
Sample size or count used in the calculation.
number of distinct categories ndc
The value at the specified point or condition.
GRR = √(EV²+AV²)
Reference formula or conversion factor shown for context.