A Check Sheet is a data collection tool that usually identifies where and how often problems appear in a product or service. It’s specifically designed for the kind of process being investigated. Both variable and attribute data can be recorded on a checksheet.

Just list the type of non-conformance, tally the number of times it happens, and sum the total. Very easy to turn into a Pareto chart.

check sheet

Recording checksheets

Used for measured data.


Used for attribute or counted information.

Measles Chart

Commonly used to record location data. Shows problems on a geographic area. Ex. a big red x on the engine area on a car image given to you by AAA to show you need to change your oil.

Also see Problem Identification.

Check Sheet Video

Six Sigma Black Belt Certification Check Sheet Questions:

Question: Which of the following tools would be most appropriate for collecting data to study the symptoms of a problem? (Taken from ASQ sample Black Belt exam.)

(A) Check sheet
(B) Flow diagram
(C) Force-field analysis
(D) Activity network diagram

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Questions, comments, issues, concerns? Please leave a note in the comments below!

Answer:(A) Check sheet. The check sheet looks at data. The others look at process.


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