Check Sheet | Types of Check Sheets | Definition | Examples

 What is a Check Sheet?

→ Check Sheet is a systematic method of collecting, recording, and simply presenting the relevant data for analysis of the process.

→ Sometimes it refers to a "Tally Sheet".

→ It can collect qualitative and quantitive data.

→ The Check Sheet is the most important tool in the Lean Six Sigma Project for data collection.

→ It is one of the most popular tools among the 7 Quality Control Tools.

Table of Contents:

• What is a Check Sheet?
• When to use Check Sheet?
• Why to use a Check Sheet?
• 5 Types of Check Sheets
• How to Make a Check Sheet?
• Example of Check Sheet
• Integration of Check Sheet with Other QC Tools
• Advantages of Check Sheet
• Benefits of Check Sheet
• Conclusion

When to use Check Sheet?

• Data collection and analysis
• Monitoring the manufacturing process performance
• Traceability purposes
• Identifying Defect Locations
• Identifying Trends Over Time
• Root Cause Analysis

Why to use a Check Sheet?

→ A check sheet is a simple but powerful tool and it is used for data collection and analysis in different industries and processes.

⏩ Refer to the below important reasons why we need to use a checksheet:

• For structured data collection and analysis
• Real-time data gathering
• Visualization of the process
• Problem analysis and identification
• Process performance tracking
• This tool is cost-effective and very easy to use

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5 Types of Check Sheets:

→ Dr. Kaoru Ishikawa identified five different types of check sheets.

⏩ 5 Types of Check Sheets are:

1. Process performance
2. Defect item
3. Defect location
4. Task conformation (Related to traceability)
5. Defect cause

How to Make a Check Sheet?

→ Now we will learn about the preparation of the checksheet in easy steps.

⏩ The five steps to create a check sheet are:

1. Establish what information is needed.
2. Determine 5W and 2H.
3. Construction.
4. Testing.
5. Take the final approval for Use.

Step 1. Establish what information is needed

→ First of all we need to define what information is needed.

→ Sometimes this is known as record form, form, data sheet, etc...

Step 2. Determine 5W 2H:

→ After determining the necessary information, we will conduct the 5W2H analysis.

→ Why is the data needed?

→ What type of information collection is required?

→ From where the data will be collected? (Plant/machine/place)

→ Who will collect the data?  (Operator/ supervisor/manager)

→ When will the information be collected?  (Every hour/ at the time of receipt)

→ How should the data be measured? (Instrument/clock)

→ How much data is essential?

Step 3. Construction of the Sheet:

⏩ CheckSheet has three types of information that are:

• Title
• Source Information
• Content Information

Now we will learn all 3 types of information in detail.

(1) Title:

➝ In the title, we need to give a suitable title to our checksheet.

➝ Title should be clear and concise so all relevant persons can easily understand.

(2) Source information:

➝ The source information is the most important information that we need to collect for our further analysis and record.

⏩ The source information is:

• Name of the project/ problem theme.
• Location of data collection.
• Date and/or time.
• Name of the person recording data.

(3) Content information:

➝ After title and source information the last thing is the content information that we need to add.

⏩ The content information is:

• Column/Raw with defect/event name.
• Then Column/Raw to record frequency.
• And Column/Raw to record the total.

Step 4. Testing of Sheet:

➝ Now the next step is testing the sheet.

⏩ Refer to the below-mentioned key criteria of testing:

• Test the sheet with at least three different collectors.
• Reconfirm that the columns/ rows are relevant and required.
• Check if the sheet is easy to record and use.
• Make changes based on the feedback.

Step 5. Final approval for using this sheet:

➝ Now the final step is to get the final approval for use or implementation.

⏩ Key points of final approval of the checksheet are:

• Explain the use of this sheet to the data collector.
• Ensure that the data collector understands the reason for the data is being collected.
• Collect data.
• Standardize its use to assure consistency.

Example of Check Sheet:

➝ Now we will take one example for a better understanding of data collection.

➝ For that we will take an appropriately designed checksheet.

➝ This sheet includes key points such as the frequency and location of defect.

⏩ Most common points that should be included in the checksheet are:

• Operator Name
• Type of the data that needs to be collected
• A location where the data is being collected
• Time of data collection
• The objective of data collection

➝ For a better understanding refer to the below picture.

➝ In this example, we have counted the frequency of various defects at the time of checking the product in ongoing production.

➝  And at the end of the week we will analyze the defect types and will take appropriate action to eliminate those defects.

➝ Now we will take one more example to understand the tally sheet.

➝ The example of the defect collection tally sheet is mentioned below.

➝ In this example, we have counted the frequency of various defects at the time of online inspection of the product during manufacturing.

Integration of Check Sheet with Other QC Tools:

➝ Now we will understand how the checksheet is easily integrated with the other 6 quality control tools.

⏩ Refer to the below-mentioned integration with other QC Tools:

➡️Cause and effect diagram: Data from checksheets can be used to prepare cause and effect diagrams for the identification of potential causes of defects.

➡️Control Charts: We can easily plot the frequency data from checksheets to control charts to monitor process stability over time.

➡️Pareto Chart: The categorized data should be collected and used with Pareto charts to identify the most impacting factors on the quality of a product or service.

➡️Histogram: We can easily display checksheet data into the histogram for easy visualization and identification of the patterns or trends.

➡️Scatter Diagram: Collected data can be used to create scatter diagrams to identify relationships between variables.

➡️Flowchart: With the help of data collected in the checksheet we can use it for process mapping and we can easily identify the bottleneck in processes.

Advantages of Check Sheet:

• It is very simple and easy to use
• It is a versatile tool
• Fundamental tool for analysis
• Standardization of data collection
• Problem identification and root cause analysis
• Easily integrate with other 7 QC Tools

Benefits of Check Sheet:

• By using this we can make data gathering simple, systematic, easy, and effective.
• We can save time and easily data collection in regular Manufacturing Processes.
• It is used for monitoring process performance.
• We can use this for different purposes like counting, tracking, etc.
• It is also very helpful for traceability.

Conclusion:

➝ The checksheet is one of the most important tools on 7 QC Tools.

➝ It plays a pivotal role in the initial stages of data collection and analysis.

➝ The checksheet is a fundamental and basic tool in quality control.

➝ It is very useful for systematic data collection and analysis.

➝ With the help of this tool, we can collect data consistently and accurately.

➝ We can identify different patterns or trends for root cause analysis.