The estimation of alternative control efficiency with the use of the Cohen's Kappa coefficient

In the article there was prepared the characteristics of the Cohen's Kappa method - one of methods concerning the analysis of measuring systems used for alternative control, recommended by the motorization branch (MSA 4 th Edition. Ford, Chrysler, GM, 2010). The analysis of the examined method has been conducted while taking into consideration, as follows: history, use, calculation, results' interpretation, example, pros and cons of the method, research methodology. The Cohen Kappa coefficient, when skillfully used, may cause the increase of control activities efficiency performed by individual inspectors as well as adequate choice of people designed to fulfill the key control operations. The Kappa statistics usability was verified upon estimating the conformity of inspectors. What was underlined is the fact, that statistics of the Kappa type should not be perceived as a determined, unique standard and assumptive way of conformity estimation. Moreover, there was proposed the use of additional helpful indicators during the analysis of alternative control systems efficiency.