A check sheet is a data-recording device used to categorize and measure the frequency of process problems, causes, and other performance factors. A check sheet can help you in the following applications:
- Provide consistent data collection
- Identify and define problems / opportunities
- Set priorities
- Identify root causes
- Follow up and verify results
Check sheets are designed to help collect data with minimal effort but high visibility. They can vary from simple tally sheets to custom-designed forms to collect data into segmented categories. The information can indicate patterns and trends. Data is collected over a period of time and presented in tabular form.
An example of a check sheet is shown below. In this example data is collected on three different defects for one day’s production on each shift. It is easy to see that defect C has the highest frequency and that most of the defects occur on 1st and 3rd shifts. Follow-up investigations can then be conducted as to the root causes of the defects and the differences in shift quantities.
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Shift
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||||
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Defect
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1
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2
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3
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Total
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|
A
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xx
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x
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xxx
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6
|
|
B
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x
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x
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2
|
|
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C
|
xxxx
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xxx
|
xxxxx
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15
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