MGTS7527 Chap.9 Quality, Time Pressure and Rework
Quality, Time Pressure and Rework
A definition that rules things out
Week 5 defines quality as conformance to agreed requirements, fitness for the intended purpose, evidence that the deliverable works, and preventing defects as well as finding them. It is not luxury, extra unrequested features, hidden defects or a final inspection owned by a specialist.
Quality becomes manageable when an agreed need can be traced through acceptance criteria and tolerances to verified evidence.
Assurance, control and two kinds of checking
Quality assurance builds confidence in the process; quality control produces evidence about the deliverable.
Verification asks whether it was built right, validation whether the right thing was built, and acceptance whether the authorised stakeholder can accept it.
The chapter's clinic example is a bus app that passed every test and still failed riders at outer stops.
Failure costs and deadline pressure
The cost of quality splits into prevention and appraisal on one side and internal and external failure on the other, and the chapter compares two strategies for the same release.
It then covers how time pressure creates a rework loop, the legitimate options when a date is fixed, and what is usually non-negotiable without formal authority.
Quality in the Team Project Plan
The plan brief wants the main inspections, tests and reviews named: the ones that prove each major deliverable and let the finished facility be accepted.
The requirement-to-evidence chain in this chapter is the way to answer: for each major deliverable, state the requirement, the acceptance criterion and the check that proves it.
What this chapter covers
- 01
What quality is and is not
- 02
Requirement, acceptance criteria and tolerance
- 03
From requirement to quality evidence
- 04
Quality assurance and quality control
- 05
Verification, validation and acceptance
- 06
Cost of conformance and nonconformance
- 07
Correction and corrective action
- 08
The rework loop under time pressure
- 09
Options when the deadline is fixed
Worked example · free
Compare the cost of quality for two bus-app release strategies
- 1Strategy one: 10 + 25 + 60 + 45 = $140k.
- 1Strategy two: 35 + 30 + 20 + 10 = $95k.
- 1Difference: $140k minus $95k = $45k lower with strategy two.
- 1Pattern: $30k more on prevention and appraisal removes $75k of failure cost, most of it from external failure.
Key terms
- Quality Assurance
- Activities that build confidence the work process can produce the required result.
- Quality Control
- Inspection, testing and measurement that produce evidence a deliverable meets its criteria.
- Validation
- Checking that a deliverable works for its intended use, users and operating context.
- Cost of Nonconformance
- Internal and external failure costs caused by defects found before or after acceptance.
- Corrective Action
- Action aimed at the root condition behind a quality problem, so that it does not happen again.
Quality, Time Pressure and Rework FAQ
What is the difference between verification and validation?
Verification asks whether the deliverable was built right, checking it against specifications, requirements and design. Validation asks whether the right thing was built, checking it works for the intended use, users and operating context. A deliverable can pass one and fail the other.
Why can rushing make a project later?
Because schedule pressure tempts teams to skip or weaken controls, defects escape, downstream rework follows, delay and cost grow, and the pressure rises again. Keeping the small number of controls that stop serious failures, even under pressure, is what breaks the loop.
What can a manager legitimately change when the deadline is fixed?
Phase lower-value scope with approval, resequence genuinely independent work, add capable people to critical work, automate or reuse proven tools, use approved contingency, or escalate the trade-off to governance. Hiding defects or changing acceptance criteria quietly is not recovery.
What is the difference between a correction and a corrective action?
A correction fixes the specific nonconforming result, such as replacing a damaged part. A corrective action goes after the underlying condition that let the problem happen, such as changing a work instruction, supplier control or test sequence, so the same defect does not recur.
Assessment move
For one deliverable you know, write a requirement, an acceptance criterion with a tolerance, a verification check and a validation check. Then list two costs of conformance and two of nonconformance it could incur, and say which you would rather pay.
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