Attribute chart: np chart is generally used to monitor the number of non-conforming or defective items in the measurement process.
Attribute Charts: p Chart is generally used to analyze the proportions of defective or non-confirming items in a process.
What is the F-Distribution? The F-distribution, also known Fisher-Snedecor distribution, is extensively used to test for equality of variances from two normal populations. F-distribution got its name after R.A. Fisher, who initially developed this concept in the 1920s. It is a probability distribution of an F-Statistic. The F-distribution is generally skewed and also related to (more…)
Value Stream Analysis (VSA) is the step that comes after Value Stream Mapping: it’s the critical examination of a value stream map to find and prioritize opportunities for improvement. Where mapping documents how work actually flows today, analysis is where you interrogate that map for waste, delay, and misalignment between supply and demand, and turn (more…)
One of the biggest challenges for Six Sigma students is Hypothesis Testing. Use the Hypothesis Tests Study Guide, and you’ll be set!