I have been asked to assess the accuracy and precision of a new measurement method (Let's call it method B). This new method is compared to an existing one (A) that has its own specifications in terms of stdev of a single measurement. What we do is to measure several samples with method A and then with method B. Since A is very expensive, only one A measurement per case is available. Method B is cheaper, so we measure each sample with method B for several times.
Another problem is that we are unable to find samples that would span across the entire legal measurement range, resulting in several samples in the first quartile of the range, several in the last range quartile and almost no in between.
How can I assess the accuracy and precision of method B? Any help or link will be appreciated.
Thank you very much
P.S. This is not a homework.
P.P.S I admit, I don't know statistics well