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Project Management & Agile · Intermediate

S-Curve

Graph of cumulative costs, labor hours, or other quantities plotted against time, typically shaped like an S.

Definition

Spending is slow at the start, accelerates during execution, and tapers at closure. EVM charts plot PV, EV, and AC as S-curves.

Example

AC curve above EV curve shows overspending.

Exam tip

Read EVM S-curve graphs: EV below PV is behind schedule; AC above EV is over budget.

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