Basics 13 min read
Probability based sampling
A probability sampling method is any method of sampling that utilizes some form of random selection. In order to have a random selection…
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Basics 3 min read
Defining Statistical Quality Control
The control chart is a graph used to study how a process changes over time. Data are plotted in time…
Basics 4 min read
Control charts
Control charts have long been used in manufacturing, stock trading algorithms, and process improvement methodologies like Six Sigma and Total…
Basics 6 min read
Scatter Diagram
Scatter Diagram or correlation diagram is a tool to describe changes in a dependent variable in relation to any change…
Basics 7 min read
CAUSE EFFECT DIAGRM IN INDUSTRY
Definition of Cause & Effect Diagram The cause & effect diagram is the brainchild of Kaoru Ishikawa, who pioneered quality…
Basics 4 min read
Pareto Chart
The Pareto chart is a quality improvement tool that is based upon the Pareto principle, the principle that 80% of an…
Basics 4 min read
Drawing a histogram
A histogram is a graphical tool used to visualize data that can be produced with histogram software such as Quality America’s…
Basics 3 min read
Shapes of histogram
A histogram can be created using software such as SQCpack. How would you describe the shape of the histogram Bell-shaped: A bell-shaped…
Basics 3 min read
Check Sheets
The Check Sheet is a simple document that is used for collecting data in real time and at the location…
Basics 2 min read
Concepts Process Quality
Process quality refers to the degree to which an acceptable process, including measurements and criteria for quality, has been implemented…
Basics 3 min read
Models of Cost of Quality Cost of Quality Model
The identification and application of quality costing can be a very positive driver of quality improvement across an organization, in…
