Earned Schedule Training

Earned Schedule Training Earned Schedule Training

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Statistical Process Control 1.5 1 0.5 ln(SPI) 0 anomaly < lnSPI t > u= 0.994 σ=0.266 +3σ -0.5 -1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Months -3σ EVA-11 Jun 12-17, 17, 2006 Copyright 2006 Lipke & Henderson 122

Planning for Risk • Risk mitigation ⇒ Schedule Reserve • Data needed • Performance variation from similar historical project [Standard Deviation = σ H ] • Planned Duration of new project [provides the number of performance observations (n)] • Variation of Means (ln( SPI(t) -1 m ) = σ H / √ n = σ m • Probability of Success Desired (PS) EVA-11 Jun 12-17, 17, 2006 Copyright 2006 Lipke & Henderson 123

Planning for Risk<br />

• Risk mitigation ⇒ <strong>Schedule</strong> Reserve<br />

• Data needed<br />

• Performance variation from similar historical project<br />

[Standard Deviation = σ H ]<br />

• Planned Duration of new project [provides the<br />

number of performance observations (n)]<br />

• Variation of Means (ln(<br />

SPI(t) -1<br />

m ) = σ H / √ n = σ m<br />

• Probability of Success Desired (PS)<br />

EVA-11<br />

Jun 12-17, 17, 2006<br />

Copyright 2006<br />

Lipke & Henderson 123

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