import type { GageRRInput, GageRRResult } from './types.js';
/**
 * Gage R&R (Measurement System Analysis) — AIAG MSA 4th Edition, Average and Range Method
 *
 * @formula
 *   - EV = R̄ × K1
 *   - AV = √((X̄_diff × K2)² − (EV² / (n×r)))  (floored at 0)
 *   - GRR = √(EV² + AV²)
 *   - PV = Rp × K3
 *   - TV = √(GRR² + PV²)
 *   - %GRR = GRR/TV × 100
 *   - ndc = floor(1.41 × PV/GRR)
 *
 * @reference AIAG Measurement Systems Analysis Reference Manual, 4th Edition
 * @reference IATF 16949:2016 Section 7.1.5.1.1
 */
export declare function gageRR(input: GageRRInput): GageRRResult;
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