In the PMBOK Guide, fifth edition, the validate scope process has replaced the verify scope process; therefore, this post is obsolete. Please refer to my new blog post on quality control and validate scope.
The quality control and verify scope processes are important for a project as they ensure that the deliverable is defect-free and meets the user’s requirements.
Since both processes involve inspection and testing, many professionals get confused and think that they are the same. They have different objectives and are carried out with different goals in mind.
Quality Control
In the quality control process, you inspect the deliverable for correctness and see if it meets specifications.
The team members perform Quality control activities throughout the monitoring and controlling phase. This ensures that the product is defect-free and all parameters are within acceptable limits.
Many tools and techniques are used during this process, including inspection, cause and effect diagram, control chart, run chart, scatter diagram, etc.
Example of Quality Control Process
Now, let us look at a real-world example of the control quality process.
You were appointed a project manager for a government contract to construct a 1,000 km road. Your team has a quality control engineer to monitor the quality activities.
This quality control engineer will be on-site to inspect and recommend changes to the deliverable if required so that it conforms to the stated requirements. He will check if all the materials supplied are of the required quality, e.g., coal tar, the stones are crushed properly, the ground level is correct, the sidewalk is properly aligned, etc.
Verify Scope
In this process, you will inspect the deliverable with the client to see if it meets all requirements and is acceptable.
The verify scope process is carried out during the monitoring and controlling phase of the project.
Both processes have only one similarity: they are performed during the monitoring and controlling phase of the project. However, the objective of the verify scope process is to get formal acceptance from the client on the deliverable.
Example of Verify Scope Process
Now, we will look at the verify scope activities using the same example discussed above.
You have built 100 km of the required 1,000 km of road, and it is ready for delivery. You invite the authorities to come and inspect and formally accept it.
The government representatives arrive and verify whether or not you meet all the requirements. They check some criteria, e.g., if the road width is correct, the road leveling is okay, and the length of the completed part of the road.
Once they are satisfied, they will formally accept the completed part of the road, and you get paid.
Note that performing the verify scope process at the end of every project is not always necessary. It can happen far before the project ends. As seen in the example above, you can also perform the verify scope activities with the quality control process.
In the given example, both processes are being performed in parallel. The government’s representatives are verifying the scope for the completed part of the road with you, and at the same time, your team is building and testing the rest of the road.
Differences Between Quality Control and Verify Scope
The differences between the quality control and verify scope processes are as follows:
- Quality control deals with the quality of the product while the verify scope process deals with the scope of the product.
- Quality control activities are performed internally, while the verify scope process is performed with the client.
- Quality control activities are performed during project execution, while the verify scope process is usually performed at the end of the project or phase.
- The objective of the quality control process is to produce a defect-free product, while the purpose of the verify scope process is to get the deliverable accepted by the client.
Conclusion
Both the control quality and verify scope processes are important for a project. The quality control process helps to create a defect-free and high-quality product. The verify scope process helps to get the product accepted by the client. Quality control activities are performed throughout the monitoring and controlling phase and verify scope activities are needed when the deliverable is ready to be delivered.
There is another process called quality assurance, which is often mistaken for quality control. Please visit: Quality Assurance and Quality Control to learn more about it.
I am Mohammad Fahad Usmani, B.E. PMP, PMI-RMP. I have been blogging on project management topics since 2011. To date, thousands of professionals have passed the PMP exam using my resources.
Quality control activities are performed throughout the monitoring and controlling phase and verify scope activities are needed when the deliverable is ready to be delivered
Hello Ndzo, verify scope is replaced by validate scope process in the sixth edition of the PMBOK Guide.
Hi Fahad,
Thank you for your useful post and simple explanations. I’ve noticed a contradiction on your post.
Under the “Verify Scope” headline of your post, you stated that “The verify scope process is also performed during the monitoring and controlling phase of the project.
Both processes are performed during the monitoring and control phase of the project, however, this is the only similarity.”
Under the “Conclusion” headline, on the other hand, you stated that “Quality control activities are performed throughout the execution phase”
P.S: According to Rita’s process chart quality control is performed in monitoring&controlling phase.
Executing and Monitoring phases occur simultaneously. You are working on a deliverable and at the same time you are monitoring it as well so as to make it defect free.
Hi Fahad,
How do you answer the following questions? (I’m just trying to fill my knowledge gap. I only study from Rita’s book, and maybe this is a wrong strategy for me.)
Q1: In which process group you perform quality control?
a) Planning
b) Executing
c) Monitoring&Controlling
d) Closing
Q2: In which process group you perform quality assurance?
a) Planning
b) Executing
c) Monitoring&Controlling
d) Closing
Quality control is performed in Monitoring and Controlling process group.
Quality assurance is performed in Executing process group.
Please note that, this post was based on the fourth edition of the PMBOK Guide, in the fifth edition, verify scope is deleted and replaced with validate scope.
Please read the following blog post:
https://pmstudycircle.com/2014/09/control-quality-versus-validate-scope/
Hi Fahad –
Can you please explain it soon as I am preparing for my exam which is mid June and need to understand it. Also, do you have any blog posts on diff. Quality thories (Juran, Deming etc.)? I am also confused about diff. project selection methods.
Thank you so much
Sangeeta
Hi Fahad – Didn’t mean to sound demanding in my reply earlier, just desperate to understand. Any help would be greatly appreciated :) By reading all your your blogs I have realized that understanding these concepts is the key and your blogs have helped me do that. Been going thru all the topics in your study notes section and can’t thank you enough for your blogs.
Hello Sangeeta, here is the post explaining standard deviation:
https://pmstudycircle.com/2013/06/what-is-standard-deviation
Hi Fahad,
Really appreciate your blogs and your explanations, can you please help me understand how to calculate Standard Deviation? I just don’t seem to get it.
Thanks
Hello Sanggeta,
To calculate the Standard Deviation, you have to calculate the Mean and Variance. Then only you would be able to calculate the Standard Deviation.
Anyway, Now I’m going to write a blog post covering these points. Once I publish this post, hope you will never have any problem in calculating Standard Deviation.
Thanks. From the explanation, can one therefore conclude that Quality control and Verify scope are practically the same only that the performing agent are different? That is,what the customer calls Quality Control is Verify Scope in the eyes/lips of the performing organization
Quality Control and Verify Scope are not same. In quality control you inspect the material at the execution phase and in verify scope you inspect the complete product with the client to verify the completeness of the product; i.e scope.
Dear,
can you elaborate it ?
Are the performing agent different ? is it necessary ? they may be same i.e stakeholder/customer who accept and verified deliverable/output both.
In verify scope, client must be with you.