Chemistry-PTM-OMA_Modules_1-4

Analyzing Data – Quantitative Method MLV

Calculate for each material: • Grand Mean – the mean result across all laboratories • Repeatability (s r portions among laboratories • Relative Standard Deviation of Repeatability (RSD r ) ‐ s r

) ‐ the mean standard deviation from duplicate test 

divided by the 

mean candidate method result  • Reproducibility (s R

) ‐ the standard deviation across all laboratories

• Relative Standard Deviation of Reproducibility (RSD R ) – s R the mean candidate method result

divided by