## Importance of the Six Sigma Primary Metric

Six Sigma Primary Metric Primary Metric: The Six Sigma Primary Metric is mandatory! How does one know if a project does what it sets out to do? Every project must choose the right metrics to determine success. Primary metrics are the center point for the work to ensure that the direction and decisions made throughout…

## Top Ten Lean Six Sigma Tools

During your Six Sigma education journey, numerous tools are taught and provided to help you solve problems and identify solutions. The skills learned during your Lean Six Sigma training will help you understand when and how to use each of these Lean Six Sigma tools. While working through each DMAIC phase, there will be certain…

## How to Define a Process

The essential method for how to define a process is without question the process map. The process map helps you to understand a process and its component steps. Process maps help determine where and how a process begins and ends as well as all the steps and decisions in between. By learning the basics of…

## Normal Distribution and Normality

The normal distribution is also known as a Gaussian distribution. It is the most frequently referenced distribution and approximates many natural data tendencies. The normal distribution is a probability distribution of a continuous random variable whose values spread symmetrically around the mean. A normal distribution can be completely described by using its mean (μ) and…

## How to Write a Project Charter

In a previous article we stated that DMAIC is a structured and rigorous methodology designed to be repeatedly applied to ANY process in order to achieve Six Sigma. We also stated that DMAIC was a methodology that refers to 5 phases of a project. Define Measure Analyze Improve Control Given that the premise of the DMAIC methodology…

## Pareto Chart

The Pareto Principle is commonly known as the “law of the vital few” or “80:20 rule”. It means that the majority (approximately 80%) of effects are the result of only a few (approximately 20%) of the causes. This principle was first introduced in the early 1900s by Wilfried Fritz Pareto, an Italian economist who observed…

## Mood’s Median Test with SigmaXL

What is a Mood’s Median Test with SigmaXL? The Mood’s Median test with SigmaXL is a statistical test to compare the medians of two or more populations. Null Hypothesis (H0): η1 = … = ηk Alternative Hypothesis (Ha): At least one of the medians is different from the others The symbol k is the number…