Published
June 29, 2020
Keywords
- standard deviation,
- global variance,
- precision of measurements,
- error propagation
How to Cite
(1)
Oliveira, A. F.; Silva, A. F. S.; Queiroz, M. E. L. R.; Neves, A. A. The Paradox of Precision. Orbital: Electron. J. Chem. 2020, 12, 105-107.
Copyright (c) 2020 Orbital: The Electronic Journal of Chemistry
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Abstract
This paper is about a typical mistake in the calculation of standard deviation of measurements in cases in which there are no differences among repetitious replicates. Some students believe the standard deviation in those case is equal to zero. So, this mistake leaves to a paradox: worse balance should show better results (i.e. standard deviation equal to zero). The solution of this simple, but important situation is shown.