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.
One of the biggest challenges for Six Sigma students is Hypothesis Testing. Use the Hypothesis Tests Study Guide, and you’ll be set!
Two Sample T tests are used to resolve hypothesis tests around comparing process means. The underlying chart makes use of the T distribution.
The One and Two Sample Proportion Hypothesis tests involve a population with two samples. These tests may assume a Binomial Distribution.