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B站：DR_CAN
Dr. CAN学习笔记-数学基础Ch0-9阈值选取-机器视觉中应用正态分布和6-sigma
5M1E——造成产品质量波动的六因素
人 Man Manpower
机器 Machine
材料 Material
方法 Method
测量 Measurment
环境 Envrionment
DMAIC —— 6σ管理中的流程改善
定义 Define
测量 Measure
分析 Analyse
改善 Improve
控制 Control
随机变量与正态分布 Normal Distribution
X = ( μ , σ 2 ) X=\left( \mu ,\sigma ^2 \right) X=(μ,σ2)
μ \mu μ : 期望（平均值）， σ 2 \sigma ^2 σ2：方差
6σ与实际应用
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