Title: The Correct Application of Variance Concept in Measurement Theory,
Abstract: The existing measurement theory interprets the variance as the dispersion of
measured value, which is actually contrary to a general mathematical knowledge
that the variance of a constant is 0. This paper will fully demonstrate that
the variance in measurement theory is actually the evaluation of probability
interval of an error instead of the dispersion of a measured value, point out
the key point of mistake in the existing interpretation, and fully interpret a
series of changes in conceptual logic and processing method brought about by
this new concept.