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What quality assurance metrics can you use to measure the success of your program?

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Quality assurance (QA) is the process of ensuring that a product or service meets the expectations and requirements of customers and stakeholders. QA involves planning, testing, monitoring, and improving the quality of the output. But how do you know if your QA program is effective and efficient? How do you measure the success of your QA activities and outcomes? In this article, we will explore some of the common QA metrics that you can use to evaluate and improve your QA program.

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1 Defect Density

Defect density is the ratio of the number of defects found in a product or service to the size or complexity of the product or service. For example, you can measure defect density by dividing the number of defects by the number of lines of code, the number of user stories, the number of modules, or the number of test cases. Defect density can help you identify the areas of the product or service that have the highest risk of quality issues and need more attention and testing. A low defect density indicates a high level of quality and reliability.

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Shravanthi Goda

Sr. QA Engineer/QA Lead/QA Manager
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Another important metric is Test Case Execution Rate, which measures the percentage of test cases executed within a given time frame. This helps us assess the efficiency of our testing process and ensure we are meeting project deadlines. These metrics, along with others such as Defect Resolution Time and Defect Severity Distribution, provide valuable insights into the overall effectiveness of our QA processes

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2 Defect Resolution Time

Defect resolution time is the average time it takes to fix a defect from the moment it is reported to the moment it is closed. Defect resolution time can help you assess the responsiveness and efficiency of your QA team and your development team. A short defect resolution time means that defects are resolved quickly and do not cause delays or customer dissatisfaction. A long defect resolution time may indicate a lack of resources, skills, communication, or prioritization.

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Ankit Saxena

Technology Leader, SAFe Practitioner, AI explorer, Cloud Enthusiast, Author
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- Defect Resolution Time (DRT) is a key quality assurance metric used to measure the efficiency of resolving issues in software products. - Shorter DRT indicates a more efficient development process, leading to quicker product releases and improved customer satisfaction. - Tracking DRT over time helps identify trends, areas for improvement, and resource allocation needs within the QA process. - Benchmarking DRT against industry standards and setting targets facilitates continuous improvement and risk management in software development programs.

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3 Test Coverage

Test coverage is the percentage of the product or service that is tested by the QA team. Test coverage can be measured in different ways, such as by the number of test cases, the number of test scenarios, the number of test requirements, or the number of test features. Test coverage can help you ensure that your QA team covers all the aspects and functionalities of the product or service that are relevant and important for the quality. A high test coverage means that your QA team has a comprehensive and thorough testing strategy and reduces the risk of missing defects.

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Ankit Saxena

Technology Leader, SAFe Practitioner, AI explorer, Cloud Enthusiast, Author
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- Test Coverage measures the extent to which the codebase is tested by available test cases, indicating code quality and reliability. - Higher coverage reduces the risk of undetected defects, ensuring critical functionalities are adequately tested and minimizing unexpected failures. - It validates requirements by mapping test cases to specifications, highlighting gaps or misunderstandings in software requirements. - Comprehensive coverage facilitates effective regression testing, aids in continuous improvement efforts, and ensures compliance with industry standards.

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4 Customer Satisfaction

Customer satisfaction is the degree to which the product or service meets or exceeds the expectations and needs of the customers. Customer satisfaction can be measured by using various methods, such as surveys, feedback forms, reviews, ratings, testimonials, or referrals. Customer satisfaction can help you evaluate the impact and value of your QA program on the customer experience and loyalty. A high customer satisfaction means that your QA program delivers a product or service that satisfies and delights the customers and creates a positive reputation and relationship.

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Matthew O'Connell

Industrial Engineer / Quality Assurance / ASQ Certified / Statistics / Operations Research
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Customer Satisfaction is beneficial because it can provide a company information from interviews, surveys, and online forms to name a few. One of the key features is that instead of providing just a number, a field can be set up where the customer can provide specifics of what they liked or didn’t like. This in turn can help the team to focus on where their improvements should be focused but also helps them share and continue to improve on things that the customer liked. While feedback and rankings can help, the open ended questions can provide more value than when a customer simply puts “2-Bad” for something.

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5 Cost of Quality

Cost of quality is the total cost of ensuring and improving the quality of the product or service. Cost of quality includes both the cost of conformance and the cost of non-conformance. The cost of conformance is the cost of preventing, detecting, and correcting defects, such as the cost of planning, testing, training, auditing, or rework. The cost of non-conformance is the cost of failing to meet the quality standards, such as the cost of warranty, repair, replacement, refund, or lost sales. Cost of quality can help you optimize your QA program by balancing the investment and the return of quality. A low cost of quality means that your QA program is efficient and effective and generates more value than waste.

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John M. Cachat

High-Impact Consulting for Manufacturing & Service Industries
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Implementing a Quality Cost Business Model is a complex task that needs a smart and all-encompassing strategy. To succeed, it's vital to address challenges such as resistance to change, data collection, balancing quality and cost goals, system integration, and measuring intangible costs. Overcoming these challenges is key to enjoying the lasting advantages of better quality and cost management. Organizations that handle these issues well set themselves up for long-term success in a competitive business environment.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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What quality assurance metrics can you use to measure the success of your program?

1

2

3

4

5

6

1 Defect Density

2 Defect Resolution Time

3 Test Coverage

4 Customer Satisfaction

5 Cost of Quality

6 Here’s what else to consider

Quality Assurance

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What quality assurance metrics can you use to measure the success of your program?

1

2

3

4

5

6

1 Defect Density

2 Defect Resolution Time

3 Test Coverage

4 Customer Satisfaction

5 Cost of Quality

6 Here’s what else to consider

Quality Assurance

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