Marek Andrejkovič , Zuzana Hajduová , Stela Beslerová
The paper is focused on the implementation of the Six Sigma project in the chosen engineering company in Slovakia, to highlight the opportunities and benefits of the implementation of such projects in practice. The Quality improvement and reducing the costs of poor quality were achieved by usage of statistical methods. For the analysis we used QS-Stat, statistical processing software. Contribution of quality improvement was measured as well as technical means of indices Cp and Cpk but also economically through to the cost of poor quality and their decreasing. In this paper we also count the economic effect of improvement through decreasing the amount of additional costs for waste and additional work.