Analyze

Linear regression is a statistical technique used to estimate the mathematical relationship between a dependent variable (usually denoted as Y)...

Analysis of Variance (ANOVA) is a parametric statistical technique used to compare data sets. This technique was invented by R.A....

A Root Cause Analysis (RCA) is a problem-solving method to identify the root causes of faults or problems. A factor...

When we use a sample group to gain insight into an entire population–whether we’re talking about people or a product...

A Paired T-Distribution and Paired T-Test (Paired T-Distribution, Paired T-Test, Paired Comparison Test, Paired Sample Test) are statistical methods that...

Photo by darkday Chi square goodness of fit test specifically tells how well a categorical (nominal or ordinal) sample distribution...

In the Analyze phase of DMAIC, we want to identify the root cause of the defects that are causing variation...

Variation is the enemy! It can introduce waste and errors into a process. The more variation, the more errors. The...

Single sample test of a given proportion is used to estimate the proportion of the population. For example, to estimate...

Two Sample Z Hypothesis Tests is a parametric test is to compare the means of two independent groups of samples...