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...