Using Histograms & Descriptive Statistics to Investigate Process Data

Using Histograms & Descriptive Statistics to Investigate Process Data A simple summary of descriptive statistics is often the first step in investigating what the data have to say about the process being studied during process improvement initiatives. Questions...

Hypothesis Testing: Looking for Statistical Significance

Hypothesis Testing: Looking for Statistical Significance Hypothesis Testing is a statistical procedure that looks into proving (or not) a constructed hypothesis. Also known as Significance Tests, they are powerful in investigating and validating changes in central...

Using Boxplots for Data Visualization & Process Insights

Using Boxplots for Data Visualization and Process Insights What Are Boxplots Through the visual representation of a dataset, boxplots are very informative and very useful when comparing distributions between two or more processes. Essentially, boxplots summarize the...

Baselining a Project

Baselining a Project Nearly almost all Lean Six Sigma projects that experience a successful outcome are based on an understandable, quantifiable, agreed-upon, data-collectable baseline. Lewis Carroll gave us the heads-up in Alice in Wonderland and George Harrison, the...