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EVA-11<br />
Jun 12-17, 17, 2006<br />
Discussion of EV Research<br />
• CPI tends to worsen as EV ⇒ BAC<br />
• IEAC = BAC / CPI ≤ Final Cost<br />
when Percent Complete is ≥ 20%<br />
• IEAC condition must be true if CPI tendency is true<br />
• Rationale supporting CPI tendency<br />
• Rework increasing as EV approaches BAC<br />
• Late occurring impacts from constraints/impediments<br />
• Lack of available EV toward end of project<br />
• My conjecture: SPI(t) & IEAC(t) = PD / SPI(t)<br />
behave similarly to CPI & IEAC = BAC / CPI<br />
Copyright 2006<br />
Lipke & Henderson 99
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