GRAFIK PENGENDALI MULTIVARIATE EXPONENTIALLY WEIGHTED MOVING AVERAGE (MEWMA) BERDASARKAN ARL DENGAN PENDEKATAN RANTAI MARKOV (Studi Kasus: Pengendalian Kualitas Produksi Air Minum dalam Kemasan di PT Tirtamas Lestari); MULTIVARIATE EXPONENTIALLY WEIGHTED MOVING AVERAGE (MEWMA) CONTROL CHART BASED ON ARL USING MARKOV CHAIN APPROACH (Case Study: Quality Control Production of Bottled Water in PT Tirtamas Lestari)

Wiratih, Iga Ayu, Abdurakhman

2015 | Skripsi | FMIPA

Quality control chart is one of the tools of the most influential and widely used to detect the deviant behavior in industrial process. One of the control charts that efficiently used to detect small shift and to control the process of two or more variables are Multivariate Exponentially Weighted Moving Average (MEWMA) control chart. The measurement of MEWMA control chart is obtained through Markov chain approach in determining the value of average run length (ARL). ARL is the average number of points or samples should be drawn before a sample shown an out of control condition. In this study, MEWMA control chart will be applied in quality control of water production in PT Tirtamas Lestari.

Kata Kunci : Multivariate EWMA chart, Average run length, control chart, Markov chain approach