Dataset: wood_drill_gage.csv Source: M-H. C. Li and A. Al-Refaie (2008). "Improving Wooden Parts' Quality by Adopting DMAIC Procedure," Quality and Reliability Engineering International, Vol. 24, pp. 351-360. Description: Gage Repeatability and Peproducibility (GR&R) experiment on output from a drilling machine process. 2-Way random effects model with 10 parts, being measured by 3 Operators, on 3 occasions (replicates). Measurements in mm. Variables/Names Part ID (Part) Operator ID (Operator) Replicate (Rep) Measurement (Ymeas)