Seven Quality Tools

SEVEN BASIC QUALITY TOOLS
As the name implies, the seven basic tools are the simplest and most essential tools required for quality control. They are basic due to their simplicity and ease of use. Seven Basic Quality Tools include: Check Sheet, Histogram, Pareto, Cause Effect Diagram, Control Chart, Scatter Diagram, Flowchart.    

CHECK SHEETS 

Check sheets are forms, chart or graphs used to systematically collect and analyze data in real time. Check sheets help identify patterns and trends at source thus providing immediate conclusions on gathered data. There are different types of check sheets available depending on the type of data recorded and analysis method chosen. The three types of check sheets widely used include the tabular check sheet or tally sheet, location or concentration diagram/check sheet and the graphical or distribution check sheet.

Please click here to download the full technical document.

Please click here to download the template of Check Sheets.

HISTOGRAM

The histogram is a statistical tool for presenting numerous data in a form that makes clearer the central tendency and the dispersion along the scale of measurement, as well as the relative frequency of occurrence of the various values.

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Please click here to download the template of HISTOGRAM.

PARETO

This principle states that any population that contributes to a common effect, a relative few of the contributors-the vital few- account for the bulk of the effect. It is a tool used to establish priorities and present information objectively by segregating contributing effects into the vital few and useful many.

Please click here to download the full technical document.

Please click here to download the template of PARETO.

CAUSE AND EFFECT (FISHBONE) DIAGRAM

The cause and effect diagram was developed in 1950 by Professor Kaoru Ishikawa. It is also known as Ishikawa or fishbone diagram. It is widely used by quality professionals, Engineers and teams alike to perform root cause analysis, identify process/product design improvements opportunities, determine sources of product/process variation, etc.

Please click here to download the full technical document.

Please click here to download the template of FISHBONE diagram.

CONTROL CHARTS

Control charts are graphical tools used to determine if a process is in a state of statistical. Control charts are now widely used in every industry. They are the principal tools of statistical process control (SPC).

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Please click here and here to download the template of Control Charts.

SCATTER DIAGRAM

A scatter diagram is a tool for analyzing relationships between two variables. One variable is plotted on the horizontal axis and the other is plotted on the vertical axis. The pattern of their intersecting points can graphically show relationship patterns.

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 STRATIFICATION

Stratification is the separation of data into categories. Its most frequent use is during the diagnostic journey to identify which categories contribute the most to the problem being solved.

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