Open AccessPROBABILITY DISTRIBUTION OF TIME DURATION OF MANUAL OPERATION IN THE PRODUCTION OF GLASS EYES
Author(s) -
Vladimír Sojka,
Petr Lepšík
Publication year - 2021
Publication title -
ad alta
Language(s) - English
Resource type - Journals
eISSN - 2464-6733
pISSN - 1804-7890
DOI - 10.33543/1102340342
Subject(s) - goodness of fit , probability distribution , duration (music) , production (economics) , distribution (mathematics) , statistics , computer science , normal distribution , mathematics , art , mathematical analysis , literature , economics , macroeconomics
When precise planning of capacities and times of production is needed, there must be precise data for calculation. Not all operations have to have a normal time duration distribution. Counting with average values or use values from guessed distribution can lead to mistakes in actual production planning. This article aims to determine time probability distributions to manual operations. Tests of goodness of fit are used to search for more suitable distributions. This approach is presented in a case study of glass eyes manufacturing. Results show that there can be differences between the estimated normal distribution and another more suitable one. By using tests of goodness of fit to define the correct distribution, more precise production and capacity planning results can be achieved.