FIT2002 Chap.5 Cost Planning and Quality Decisions
Cost Planning and Quality Decisions
Cost planning translates scoped work and resource assumptions into a traceable financial model. Estimates should identify quantities, rates, timing, uncertainty and their source rather than present a single unexplained total. Direct and indirect costs, contingency and relevant financial comparisons support different decisions.
A sunk cost has already occurred and should not distort the choice between future alternatives.
Quality planning defines standards, measures, responsibilities and acceptance evidence before delivery. Quality assurance focuses on whether processes are capable and followed; quality control examines actual outputs and results.
Prevention and appraisal can reduce internal and external failure costs, but the right balance depends on consequence and uncertainty. Assessment responses should connect a cost or quality number to a project action: revise the estimate, protect contingency, change the process, reject a deliverable or escalate a threshold breach.
What this chapter covers
- 01
Cost estimates built from quantities, rates, timing and assumptions
- 02
Direct, indirect, fixed and variable costs in project decisions
- 03
Contingency for identified uncertainty and transparent estimate ranges
- 04
Relevant future costs contrasted with sunk historical expenditure
- 05
Quality planning through standards, measures and acceptance evidence
- 06
Quality assurance as process confidence and control as output checking
- 07
Prevention, appraisal and failure costs as connected quality choices
Worked example · free
Build a transparent cost estimate with contingency
- +2Calculate analyst labour: 120 x $95 = $11,400, retaining both quantity and rate in the working.
- +1Calculate incentives: 30 x $60 = $1,800, then add the $2,400 fixed lab fee.
- +1Baseline future cost = $11,400 + $1,800 + $2,400 = $15,600.
- +2Contingency = 12% x $15,600 = $1,872; total planned amount = $17,472.
- +2Exclude the completed $5,000 study from comparison because it is sunk and cannot be changed by the current decision.
Key terms
- Direct Cost
- A cost attributable to a particular project activity or deliverable, such as assigned labour or project-specific equipment. The classification supports tracing and control.
- Indirect Cost
- A shared cost that supports multiple activities or projects and requires an allocation basis. Examples can include common facilities, administration or shared technical services.
- Sunk Cost
- An expenditure already incurred that cannot be changed by the present decision. It may matter to reporting but should not bias comparison of future alternatives.
- Contingency
- Budget or time set aside for identified uncertainty within the chosen plan. Its basis, ownership and release conditions should be explicit rather than treated as hidden padding.
- Quality Assurance
- Process-focused activity that provides confidence that suitable methods, standards and controls are defined and followed. It aims to prevent systematic defects.
- Quality Control
- Output-focused inspection, testing or measurement used to determine whether a deliverable meets requirements and acceptance criteria. It detects actual variation or defects.
Cost Planning and Quality Decisions FAQ
What makes a project cost estimate traceable?
A reviewer should be able to move from each total back to its work package, quantity, unit rate, timing, assumption and evidence source. Keep subtotals visible and state whether taxes, shared costs and contingency are included. Traceability allows a changed assumption to be recalculated without rebuilding the entire budget or hiding the effect inside a lump sum.
How do assurance and quality control differ in a scenario?
Assurance asks whether the process is appropriate and consistently followed, such as reviewing the test method or auditing adherence to a development standard. Control examines the actual result, such as testing response time or inspecting a deliverable against acceptance criteria. A strong plan usually uses both because a sound process and a compliant output answer different questions.
Why is more testing not always the best quality decision?
Testing creates information and can detect defects, but it consumes time and money and may occur too late to prevent rework. Select controls according to consequence, uncertainty and the value of evidence. High-risk features may justify independent or repeated checks, while low-impact work may use lighter methods. Explain the trade-off rather than equating quality with maximum inspection.
Assessment move
Create a cost table with columns for WBS code, resource or purchase, quantity, rate, subtotal, assumption and evidence source. Recalculate it after changing one quantity so you can see why traceability matters. Practise classifying costs only when the classification helps the decision; do not memorise labels without context.
For contingency questions, write the eligible base before applying the percentage and keep the reserve separate from the baseline. Build a second table for quality that names the requirement, standard, prevention action, assurance activity, control test, threshold and owner. Then take common scenario actions and decide whether each is planning, assurance or control.
Finish every calculation with a management consequence and every quality recommendation with the evidence that will permit acceptance or escalation.
Working through Cost Planning and Quality Decisions in FIT2002? Sia is AskSia’s AI Project Management tutor — ask any FIT2002 Cost Planning and Quality Decisions question and get a clear, step-by-step explanation grounded in how FIT2002 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.
