Minitab Statistical Software Version 22.1.0 is available to customers who manage their Minitab subscription in the Minitab License Portal. This release includes new features and enhancements.
New Statistical Methods
Nonparametric Capability Analysis
- Nonparametric Capability is in the Stat > Quality Tools > Capability Analysis menu.
User Benefit
Nonparametric Capability provides a robust solution to evaluate the capability of a process without any assumptions about the distribution of the data.
Summary
Capability analysis determines if a process can produce output that meets customer requirements. This determination depends on making the correct distribution assumptions or applying an appropriate transformation, like a Box-Cox or Johnson transformation. Nonparametric capability analysis provides a robust solution without any assumptions about the distribution of the data.
Automated Capability Analysis
- Automated Capability is included in the Stat > Quality Tools > Capability Analysis menu.
User Benefit
When process data follow a nonnormal distribution, the search for an appropriate distribution or transformation becomes tedious and time-consuming. Automated Capability automatically selects an appropriate distribution, transformation, or nonparametric method to determine how well the process output meets customer specifications.
Summary
Automated Capability determines the appropriateness of the normal distribution and automatically presents alternative distribution fits or transformations. You can also use process knowledge to choose a different method from the automatic selection.
Evaluate Measurement Process (EMP Crossed)
- Evaluate Measurement Process (EMP Crossed) is included in the Stat > Quality Tools > Gage Study menu.
User Benefit
When you assess the adequacy of a measurement system, one criterion is the ability of the measurement system to detect process changes. Dr. Wheeler’s Evaluating the Measurement Process (EMP) method considers this criterion and is a new alternative to the current Gage Study tools.
Summary
Evaluate Measurement Process (EMP Crossed) provides the tools to assess the process variation in a measurement system with crossed designs using the preferred Wheeler’s EMP criterion.
Improvement: One-Proportion Hypothesis Test and Confidence Intervals
User Benefit
Several improvements have been made to the One-Proportion Hypothesis Test and Confidence Intervals. Minitab now includes additional methods to improve the accuracy and appropriateness of results, including Wilson-score and Agresti-Coull. Also, you can now define the event value in the dialog.
Summary
Minitab Statistical Software includes updated and improved estimation methods for One-Proportion Hypothesis Tests and Confidence Intervals.The One-Proportion hypothesis test and confidence interval estimation methods have been updated and improved.
New: Interactive Tabulated Statistics
New: Interactive Pareto Chart
- Interactive Tabulated Statistics tool is now in Graph > Graph Builder.
User Benefit
Interactively explore relationships between variables and build meaningful descriptive statistics tables using the Graph Builder’s drag-and-drop interface and live preview. The redesigned table improves the readability and the overall user experience.
Summary
Graph Builder now includes an interactive Tabulated Statistics tool.
Improvement: Additional Graph Editing Capabilities for Interactive Graphs
- Show/hide gridlines at major tick positions
- Add reference lines on continuous scales
- Add Y-value data labels
- Customize graph size with an option to maintain aspect ratio
User Benefit
Interactively customize your results with new graph editing features.
Summary
- Show/hide gridlines at major tick positions
Display or hide gridlines at major tick positions on an existing graph. - Add reference lines
Add reference lines at values along a continuous scale on an existing graph. - Add Y-value data labels
Display Y-value labels for primary data representations on an existing graph. For example, this feature adds data labels to outliers on a boxplot or bars on a bar chart. - Customize the graph height and width
Change the height and/or width of an existing graph. An option is available to maintain the aspect ratio of a graph when you specify one dimension.