The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
A systematic difference or systematic error between an observed value
and some measure of the truth. Generally used to describe the inaccuracy
of a method relative to a comparative method in a method comparison
experiment. It also has a specific meaning in the statistical t-test,
where bias equals the difference between the mean values of the two
methods being compared or the average of all the differences between the
paired sample values.