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valid data from the minimum amount of tests

Various Systems Engineering Technical Processes develop and refine system requirements . As part of this, steps are taken to ensure that “quality requirements” are developed. Quality criteria for a requirement includes: completeness, consistency, appropriateness, non-ambiguity, achievability, and verifiabili ty. “Verifiabili ty” is an especially important criterion, which if not addressed properly, will cause evaluation problems later on in this stage of the test process. Aspects of verifiabili ty which are particularly important for evaluation include requirements that are:

• Measurable: some aspect of the requirement can be quantified;

• Observable: requirement satisfaction can be determined easily;

• Objective: no confusion exists as to what is meant;

• Realist ic: no “pie-in-the-sky” wish list.

Because of the impact on the success of the testing process, a “best practice” is to involve T&E personnel early-on in development to assess requirements as they are written for their verifiabili ty. This will pay big dividends later on during analysis and evaluation.

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TST102 Fundamentals of Test Evaluation

Lesson 19 – Analysis and Evaluation RESOURCES I PRIMT I HELP

Evaluation: Role of Quality Requirements

As you’ve learned elsewhere in this course, the first stage of the testing process is “Test Planning”. Test Planning consists of identifying information needs and using them for various plans and pre- test activities. These information needs are determined by capabilities as translated into requirements for the system and measures of effectiveness, suitability and performance.

Various Systems Engineering Technical Processes develop and refine system requirements . As part of this, steps are taken to ensure that “quality requirements” are developed. Quality criteria for a requirement includes: completeness, consistency, appropriateness, non- ambiguity, achievability, and verifiabili ty. “Verifiabili ty” is an especially im ortant criterion, which if not addressed ro erl , will cause evaluation problems later on in this stag re particularly important