PMP Formulas

Question 1

EV (Earned Value)

Answer 1

EV= Percentage complete x BAC

Question 2

SV (Schedule Variance)

Answer 2

SV = EV – PV • Are you ahead or behind schedule? • See if the project is proceeding as planned • Zero at completion • Negative = behind schedule • Positive = ahead of schedule

Question 3

CV (Cost Variance)

Answer 3

CV = EV – AC • Are you above or below budget? • See if the project is spending more/less/the same as planned. • Negative = cost overrun • Positive = cost savings

Question 4

SPI (Schedule Performance Index)

Answer 4

SPI = EV/PV • Measure of schedule efficiency • Ratio of earned value to planned value • +1 = ahead of schedule • -1 = behind schedule

Question 5

CPI (Cost Performance Index)

Answer 5

CPI = EV/AC • Measure of cost efficiency • Ratio of earned value to actual cost • Allows comparison across projects • Also known as “burn rate” • +1 = cost savings • -1 = cost overrun

Question 6

EAC (Estimate At Completion) • EAC forecast for ETC work performed at the budgeted rate

Answer 6

EAC = AC + (BAC – EV)

Question 7

EAC (Estimate At Completion) • EAC forecast for ETC work performed at the present CPI

Answer 7

EAC = BAC/CPI

Question 8

EAC (Estimate At Completion) • EAC forecast for ETC work considering both SPI and CPI

Answer 8

EAC = AC + (BAC – EV) / (CPI x SPI)

Question 9

EAC (Estimate At Completion)

Answer 9

EAC = AC + Bottom-up ETC

Question 10

ETC (Estimate To Complete) • Estimate for the cost of all the remaining work in the project •

Answer 10

ETC = EAC – AC

Question 11

TCPI (To Complete Performance Index)

TCPI = Working remaining/Funds remaining

“A measure of the cost performance that is required to be achieved with the remaining resources in order to meet a specified management goal, expressed as the ratio of the cost to finish the outstanding work to the remaining budget.”

Answer 11

TCPI = (BAC – EV) / (BAC – AC) • Greater than 1 • Harder to complete within budget • Take corrective action • Less than/equal to 1 • Performing better than expected

Question 12

VAC (Varence At Completion)

Answer 12

VAC= BAC - EAC The result will tell you as of today if you will be over or under budget at the end of the project.

Question 13

VAC% (Varence At Completion) Expresses the VAC as a percentage. Negative is over budget.

Answer 13

VAC= VAC / BAC x100

Question 14

PV (Planned Value)

Answer 14

PV = Planned % x BAC

Question 15

Three-Point Estimating or Triangle Distribution

Answer 15

= (P + M + O) / 3

Question 16

Pert or Beta Distribution

Answer 16

= ( P + 4*M + O) / 6

Question 17

Calculate Communication Channels

Answer 17

channels = N * (N-1) / 2