Methods of statistical evaluation of quality – SPC (item 20 of the documentation system of quality control of ISO norm, series 900) of various processes, products and services belong amongst basic qualitative methods that enable us to analyse and compare data pertaining to various quantitative parameters. Also they enable, based on the latter, to propose suitable interventions with the aim of improving these processes, products and services. Theoretical basis and applicatibily of the principles of the: - diagnostics of a cause and effects, - Paret analysis and Lorentz curve, - number distribution and frequency curves of random variable distribution, - Shewhart regulation charts, are presented in the contribution.
Uitgever:
Technical University of Kosice, the Faculty of Mining, Ecolo
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