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Fundamentals of Test Evaluation

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

Technical Processesfor evaluation include require

Are used to design and realize the system • Measurable: some as products. Consist of: Stakeholder Requirements • Observable: requirem Definition, Requirements Analysis, Architecture

Design, Implementation, Integration, Verification, • Objectiv e : no confusi Validation and T ransition .

• Realistic: no “pie- in – the- s 1st.

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 PR INT I HELP

Requirements Problems

Invalid requirements can cause many problems in system design and other T&E activities. Here is a list of examples of invalid requirements . Think about why each of these might cause a potential problem then select on each one for an explanation.

• Not heavy

• More user· frjendly than current system

• Shall be desjgoed JAW MIL-0 -14567

• 100% majntajnable

• No false alarms

• Must use proven technology

• Interfaces wjth other systems must be effective

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