مقایسهٔ روش‌ها

	کنترل فرایند آماری بیزی	سیکس سیگما DMAIC
حوزه	طراحی آزمایش	مدیریت کیفیت
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1950s (foundations); formalized 1990s–2000s	2014
پدیدآور	Various (Girshick & Rubin 1952 early signal detection; Menzefricke 2002 Bayesian control chart framework)	Motorola; Pyzdek & Keller
نوع	Bayesian process monitoring technique	Structured process improvement methodology
منبع بنیادین	Menzefricke, U. (2002). On the evaluation of control chart factors for monitoring the process mean and variance. Journal of Quality Technology, 34(2), 167–178.	Pyzdek, T., & Keller, P. (2014). The Six Sigma Handbook (4th ed.). McGraw-Hill. ISBN: 978-0-07-184053-9
نام‌های دیگر	Bayesian SPC, Bayesian process monitoring, B-SPC, Bayesian control charting	DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC
مرتبط	5	3
خلاصه	Bayesian Statistical Process Control (Bayesian SPC) extends classical SPC by replacing fixed, frequentist control limits with a probabilistic framework that incorporates prior knowledge about the process. Rather than waiting for a run of points to exceed a pre-set 3-sigma boundary, Bayesian SPC continuously updates the probability that the process has shifted given the incoming data, enabling earlier and more informed detection of out-of-control states while formally accounting for uncertainty in process parameters.	Six Sigma DMAIC is a data-driven, five-phase process improvement methodology — Define, Measure, Analyze, Improve, and Control — used to reduce defects and process variation to fewer than 3.4 defects per million opportunities. Originating at Motorola in the 1980s and systematized by practitioners including Pyzdek and Keller, it is widely adopted in manufacturing, healthcare, finance, and service industries seeking sustained quality gains.