In a hole drilling process, 30 hole positions were analyzed. the standard deviation of these 30 hole positions is 0.5 mm. by doing a measurement system r & r study, gage used to measure hole position haslatex: \sigma_{repeatability^{=0.4mm}} σ r e p e a t a b i l i t y = 0.4 m m , and latex: \sigma_{reproducibility^{=0.4mm}} σ r e p r o d u c i b i l i t y = 0.4 m m . what is the gage variation?