Training and consultancy for testing laboratories.

Posts tagged ‘Significance testing’

A linear regression approach to check bias between methods – Part II

 

Plot of reference and trial methods

A Worked Example

Suppose that we determined the amount of uranium contents in 14 stream water samples by a well-established laboratory method and a newly-developed hand-held rapid field method…..

A linear regression approach to bias between methods – Part II

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

 

Types I and II errors in significance tests

Type I and type II errors in significance tests

 

How to apply the LSD method?

the-least-significance-difference-method

Handling systematic errors in testing

handling-systematic-errors-in-experiments

How to use R in paired t-testing?

how-to-use-r-in-paired-t-testing

Overcoming the limitation of t-distribution

Overcoming the limitation of t-distribution

What is data mining?

What is Data Mining?

Controversies regarding significance testing

Controversies regarding hypothesis testing

What is a P-value in a test statistic?

What is a P-value in a test statistic