Training and consultancy for testing laboratories.

Archive for the ‘Basic statistics’ Category

One-way ANOVA by first principle – an illustration

To understand how to go about evaluating sampling uncertainty and quality control of sampling, we must be familiar with the basic analysis of variance ANOVA principles….

An illustration of One-way ANOVA

 

Sampling designs for uncertainty estimation

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Experimental sampling designs for uncertainty estimation

Notes on sampling in chemical measurement

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Notes on sampling in chemical measurement

How to estimate %R in microbial counting?

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How to estimate the percentage spike recovery in microbial counting

Decision risks in conformance testing – Part IV

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Decision risks in conformance testing – Part IV

Decision risks in conformance testing – Part III

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Decision risks in conformance testing – Part III

Decision risks in conformance testing – Part II

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Decision risks in conformance testing – Part II