Tips and Techniques for Statistics and Quality Improvement

Blog posts and articles about using Minitab software in quality improvement projects, research, and more.

Minitab’s Python connectivity feature allows users to run open-source Python scripts from within the Minitab interface and displays the results in Minitab’s output pane. Connectivity with Python means that custom analysis or graphs that are not already available in Minitab’s menus are only a few clicks away. And best of all, you don’t need to be a Python programmer to set this up.

Continue Reading...

Technology continuously makes our lives easier and allows many of us to stay connected to others and even work remotely during COVID-19. It’s no wonder that companies and instructors everywhere have been revamping education to include digital components in their learning programs. This approach, called blended learning, combines traditional face-to-face training led by expert instructors, with e-learning modules,...

Continue Reading...

Surveys have become commonplace in almost every industry, especially with the use of smartphones and social media. Survey data can help analysts understand customer behavior and attitudes. 

And it's not as direct as reading a number off a gage. Questions need to be constructed to get at the complex social phenomenon of behavior. The wording, responses to select from and process of collecting respondents all are part...

Continue Reading...

Have you ever been in a meeting where someone presented the results of a data analysis that you didn’t completely understand, but you didn’t ask questions because everyone else in the meeting seemed to get it? If your answer is yes, you might consider spending some time improving your data literacy.

Continue Reading...

The healthcare industry has faced enormous challenges in 2020, namely battling the novel coronavirus COVID-19. This industry is made of professionals known for their resiliency, empathy, long hours of hard work and optimism. Given all they do to help others, healthcare workers especially deserve help making their jobs and saving lives easier. One small way Minitab can specifically help them is with value stream...

Continue Reading...

Control charts are specialized time series plots that help you determine if a process is in statistical control. Although some of the most widely used ones like Xbar-R and Individuals charts are great at detecting relatively large shifts in the process (1.5+ sigma shifts), you will need something different for smaller shifts. Enter the Exponentially Weighted Moving Average (EWMA) chart.

Continue Reading...

You’ve seen them before. You might have even used them. Harvey balls are symbols to visually communicate qualitative information like project status, product features and employee performance. Unfortunately, making the symbols can be time-consuming in different programs. Thankfully, an easy-to-use and versatile Harvey Balls matrix is now available in Minitab Workspace and Companion by Minitab.

Continue Reading...

The most practical reason for statistical analysis is the fact that a subset of data is collected and not the entire population. The flexibility of collecting sampled data saves money and time! This flexibility comes with a cost in errors in our decisions.

Continue Reading...

If you’ve ever wished for an easy way to add a custom analysis to Minitab’s interface, read on! Minitab’s new Python integration feature allows an avenue for easily running custom Python code via a button in the Minitab interface. If you’re not a programmer, fear not! I’m no programmer myself, so if I can do this, you can too.

Continue Reading...

Data analysts don’t count sheep at night. We look for a nice, bell-shaped curve in their arc as they leap over the fence. That’s normal distribution, and it’s a starting point to understanding one of the most important concepts in statistical analysis: the central limit theorem.

Continue Reading...