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Hypothesis Testing Overview

October 10, 2024

Overview of Hypothesis Testing. Photo by Hartwig HDK You may know all the statistics in the world, but if you...

Process Capability & Performance (Pp, Ppk, Cp, Cpk)

October 10, 2024

Process Capability and performance (Pp, Ppk, Cp, Cpk) are specification indicators relative to process dispersion and process centering. Process capability...

Histogram

October 10, 2024

A Histogram is a bar graph that shows the frequency with which data occurs within a certain interval. In other...

Data Analysis

October 10, 2024

Data analysis is a fundamental requirement in the Six Sigma methodology for identifying process inefficiencies and reducing defects. It helps...

Confidence Intervals

October 10, 2024

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

Graphical Analysis

October 10, 2024

What is Graphical Analysis? Graphical analysis is one of the best ways to analyze problems in Six Sigma projects. It...

Hypothesis Tests Study Guide

October 10, 2024

One of the biggest challenges Six Sigma students encounter is Hypothesis Testing. There are so many types! And there are...

One Sample Z Hypothesis Test

October 9, 2024

One sample Z hypothesis test is one of the basic tests of inferential statistics. One sample Z test is a...

Two Sample Z Hypothesis Tests

October 9, 2024

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

Process Capability (Cp & Cpk)

October 10, 2024

Cp and Cpk are considered short-term potential capability measures for a process. In Six Sigma, we want to describe the...

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