10. Precision and Bias
10.1 Precision. Precision for this test
method has not been established. Until a
precision statement is generated for this
test method, use standard statistical techniques
in making any comparisons of test
results for either within-laboratory or
between-laboratory averages.
10.2 Bias. Colorfastness to water spotting
can be defined only in terms of a test
method. There is no independent method
for determining the true value. As a
means of estimating this property, the
method has no known bias.