ANALISIS SIX SIGMA DENGAN DECISION ON BELIEF CHART PADA PRODUK HOT STRIP MILL

The Decision On Belief (DOB) control chart is a univariate that was initially introduced as solution to the problem of less than optimal limits from shewhart attribute diagram, especially C. new scheme based on DOB calculation step , can change data which not normally distributed into normal distribution, then diagnose quality process errors. . defines belief or an assumption in observation vector and aim this research apply distributed, so it becomes distribution. result shows value between BKA BKB values, indicates statistically controlled process. In study, using one specification limit, namely upper limit (USL) given by company, 15 percent average production. capability index used for 3 sigma transformation Based sample data, 0.40633 level 2.719, be concluded Hot Strip Mill production still capable has reached three sigma.Keywords: Six Sigma, Belief, index, DPMO, sigma.