Interpreting the results of a Bland Altman method

When developing a new method to measure the concentration or the quantity of an element (molecule, micro organism, ...) you might want to check whether it gives results that are similar to a reference or comparative method or not. If there is a difference, you might be interested in knowing if this is due to a bias that depends on where you are on the scale variation. If a new measurement method is cheaper than a standard, but if there is a known and fixed bias, you might take into account the bias while reporting the results. XLSTAT provides a series of tools to evaluate the performance of a method compared to another.