How to calculate Uncertainty when you process experimental data.

It is the season of thesis writing. Students often confuse about experimental data processing. They do not know how to describe the quality of measured data. Here is a very good document:

PDF download .

The document is a NIST (National Institute of Standards and Technology, USA) technical note, its original link is:

Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results  .