8/19/2019 PMP QuikFormulasReference

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@ariance of a %ask using PE*% (SD"8

PE*% Probabilit+ nal+sisP 6 G: 6 O

Fverage of Pessimistic# O'timistic and G times the :ost likel+ estimates

$ommunication Paths! 5 (!=C"

8!umber of communication 'aths (! number of 'eo'le on 'ro.ect"

Sigma level36= C sigma6= 8 sigma6= sigma6= F sigma

$orrectness3FI28FB<J2GFB<<2KB<<2<<B

Estimate t+'es3Order of :agnitude,udgetDefinitive

ccurac+3=8JB to 6KJB=C9B to 68JB=JB to 6C9B

Phases where these usuall+ occur3)nitiating during initial evaluationPlanning to obtain funds and 'ro.ect a''rovalPlanning for 'ro'osals# bid evaluations# contract changes

"in#s$

• E@ (,$P" comes first in ever+ formula2

• )f it is a MvarianceN# the formula is E@ (,$P" minus something2

• )f it is an MindeN# the formula is E@ (,$P" divided b+ something2

• )f the formula relates to cost# use $ ($P"2

• )f the formula relates to schedule# use P@ (,$S"2

• !egative is bad2 Positive is good2 %hus# a C999 cost variance means that +ou are over budget2