Flashcards in Formulas Deck (8)

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1

## tE = (tO + tM + tP) / 3.”

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Triangle method - Three-points estimating

tO = Optimistic

tM = Most likely

tP = Pestimistic

2

## cE = (cO + cM + cP) / 3

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Triangular distribution.

Depending on the assumed distribution of values within the range of the three estimates, the expected cost, cE, can be calculated using a formula.

3

## cE = (O + 4M + P) / 6

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Beta distribution.

Depending on the assumed distribution of values within the range of the three estimates, the expected cost, cE, can be calculated using a formula.

4

## CV = EV – AC

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Cost Variance

is the amount of budget deficit or surplus at a given point in time, expressed as the difference between earned value and the actual cost.

5

## SV = EV – PV

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Schedule Variance

is a measure of schedule performance expressed as the difference between the earned value and the planned value.

6

## VAC = BAC – EAC

### Variance at Completion

7

## SPI = EV/PV

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Schedule Performance Index

is a measure of schedule efficiency expressed as the ratio of earned value to planned value. It measures how efficiently the project team is accomplishing the work.

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