I am a bit confused about appellation and calculation of validation parameters.
Am I right that Accuracy is qualitative (not quantitative) parameter and is a combination of Trueness and Precision?
Am I right with calculation of Trueness?
where ref is reference value, xavg is average (but sometimes I read median?)
And Precision depends on systematic error and is calculated
where s is standard deviation based on a sample (or the entire population?), xavg is average
Thanks for every answer