BASIC QUALITY TOOLS

BASIC QUALITY TOOLS

1. CAUSE AND EFFECT DIAGRAM

   • It is the representation of various elements (causes) of a system that can contribute to a problem (effect).
   • It was developed in 1943 by Professor Kaoru Ishikawa in Tokyo.
   • The cause and effect diagram is used to identify the possible causes of a problem. It allows the groups to organize large amounts information about the problem and possible causes to determine exactly.

2. CHECK SHEET

   • is a form (document) used to collect data in real time at the location where the data is generated. The data it captures can be quantitative or qualitative.
   • The check sheet is one of the so-called Seven Basic Tools of Quality Control
   • FUNCTION -To check the shape of the probability distribution of a process -To quantify defects by type -To quantify defects by location -To quantify defects by cause (machine, worker) -As a checklist

3. CONTROL CHART

   • Control charts are used to routinely monitor quality. Depending on the number of process characteristics to be monitored.
   • Statistical tool used to detect variations in the quality of a product during a manufacturing process.

4. HISTOGRAM

   • A graphical display of data using bars of different heights.
   • The histogram is one of the seven basic tools of quality control

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