by Ramon Perdigao | Oct 24, 2023 | Statistics, Best Practices, Business Transformation, Change Management, Continuous Improvement, Data Collection, Defining Problem, Lean Six Sigma, Organizational Leadership, Problem Solving, Sigma XL, Six Sigma, Standardization, Sustainable Process, Ways of Working

Using 2 Proportions Test with SigmaXL A 2 Proportions Test is a statistical procedure used to validate if two independent groups have significant differences in their proportions. We can use this test to compare, for example, if the proportion of one group is...
by Ramon Perdigao | Sep 26, 2023 | Sigma XL, Best Practices, Business Transformation, Change Management, Coaching, Continuous Improvement, Culture, Data Collection, Defining Problem, Employee Engagement, Growth, Leadership, Leading Change, Lean, Lean Six Sigma, Manufacturing, Motivation, Organizational Leadership, Politics, Problem Solving, Six Sigma, Statistics, Sustainable Process, Teamwork, Ways of Working

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...
by Ramon Perdigao | Jul 14, 2023 | Standardization, Best Practices, Business Transformation, Continuous Improvement, Data Collection, Defining Problem, Growth, Leadership, Leading Change, Lean, Lean Six Sigma, Manufacturing, Motivation, Organizational Leadership, Problem Solving, Project Management, Quality Control, Sigma XL, Six Sigma, Statistics, Sustainable Process, Teamwork, Ways of Working

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...
by Ramon Perdigao | Oct 31, 2022 | Budgeting, Continuous Improvement, Control Charts, Lean, Lean Six Sigma, Quality Control, Response Time, Sigma XL, Six Sigma, Statistics, Uncategorized

Using Control Charts Control charts were originally used in the deployment of Statistical Process Control (SPC) and later on adopted into the Six Sigma framework. Also known as Shewhart charts (after Walter A. Shewhart), these charts look into the process behavior as...