Question

What is the difference between measured and accepted value? And how are these values used to determine the precision of these values?

Answer 1

Measured values are verified and go under a series of experiments before being accepted as the norm. Accepted values are unanimously accepted values, seen as the norm by a qualified group of individuals (scientists or the people of the intellectual sphere).

Answer 2

Answer:  A measured value is value obtained by making a measurement. An accepted value is the value regarded as true.

Precision refers to how reproducible are the measured values, whether they're close or not from the accepted value.

Explanation:

A measured value is value obtained by making a measurement in an experiment, expressed as a numerical value or as a percent. It is an experimental value got in a specific laboratory.

An accepted value is the value regarded as true. It is accepted by scientists as an ideal quantity.

For example, the accepted value of 1 cubic meter of water weighs 1000 kg-wt. But if a scientist weights a cubic meter of water, the result may not be exactly 1000 kg-wt due to a number of variables during my measurement. The scientist may measure 999kg-wt or 1001 kg-wt, and this is a measured value.

Precision refers to how close two or more measurements are to each other, which means how reproducible are them, whether they're close or not from the accepted value.

Using the previous example, if the scientist weights 1 cubic meter of water three times and gets: 999, 999.5 and 1001 kg-wt, those results are precise because they are close to each other, and also close to the accepted value.