schedule performance index (spi) in project management
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Scheduling Performance Index(SPI)
Measures scheduling efficiency
SPI =EVPVScheduling Performance Index(SPI)
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
TABLE 13.3Interpretation of SPI
SPI
CPIAhead of ScheduleBehind ScheduleOn Schedule
Scheduling Performance Index(CPI)
Activity A: Total PV = $24,000SPI
TodayActivity A: PV BY TODAY= $16,000
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance Index(CPI)
Activity A: Total PV = $24,000SPIActivity A: PV BY TODAY= $16,000
Today
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance Index(CPI)
50%Activity A: Total PV = $24,000(CPI)SPIActivity A: PV BY TODAY= $16,000
Today
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance Index(CPI)Activity A: Total PV = $24,000
50%EV= $24,000* 50% = $12,000SPIEV$12,000Activity A: PV BY TODAY= $16,000
Today$16,000
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance IndexSPI$12,000=
= .750.75$16,000
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
TABLE 13.3Interpretation of SPI
SPI
CPIAhead of ScheduleBehind ScheduleOn Schedule
0.75
TABLE 13.3Interpretation of SPI
SPI
CPI
Project0.75
Scheduling Performance Index(CPI)
Activity A: Total PV = $24,000SPI
TodayActivity A: PV BY TODAY= $16,000
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance Index(CPI)
Activity A: Total PV = $24,000SPIActivity A: PV BY TODAY= $16,000
Today
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance Index(CPI)
83.33%Activity A: Total PV = $24,000(CPI)SPIActivity A: PV BY TODAY= $16,000
Today
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
Scheduling Performance Index(CPI)Activity A: Total PV = $24,000
EV= $24,000* 83.33% = ~$20,000SPIEV$20,000Activity A: PV BY TODAY= $16,000Today$16,00083.33%
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
1.25Scheduling Performance IndexSPI=
= 1.25$16,000$20,000
Scheduling Performance Index (SPI)Measures scheduling efficiencySPI = EV/PV
TABLE 13.3Interpretation of SPI
SPI
CPIAhead of ScheduleBehind ScheduleOn Schedule
1.25
TABLE 13.3Interpretation of SPI
SPI
CPI
1.25Project
TABLE 13.3Interpretation of SPI
SPI
CPIAhead of ScheduleBehind ScheduleOn Schedule
Be Careful When Using Money to Measure Time
Using Money to Measure Time works fine while the activity or project is underway, but once the activity or project is completed, the SPI will be 1.00 regardless of how late the activity or project was delivered.
Be Careful When Using Money to Measure Time Activity A: Total PV = $24,000
EV= $24,000* 75.00% = ~$18,000EV$18,000Activity A: PV BY TODAY= $24,000LF= Jan 4, 2020
Interpretation of SPITodayJune 5, 2021
EV75.00%SPI=
$24,000$18,000=0.75
Using Money to Measure Time works fine while the activity or project is underway, but once the activity or project is completed, the SPI will be 1.00 regardless of how late the activity or project was delivered.
TABLE 13.3Interpretation of SPI
SPI
CPIAhead of ScheduleBehind ScheduleOn Schedule
0.75
Although it doesnt reflect the depth of the problem, being 18 months past our late finish.
Be Careful When Using Money to Measure Time Activity A: Total PV = $24,000
EV= $24,000* 100.00% = ~$24,000EV$24,000Activity A: PV BY TODAY= $24,000LF= Jan 4, 2020
Interpretation of SPITodayJune 5, 2021
EV100.00%SPI=
$24,000$24,000=1.0
Using Money to Measure Time works fine while the activity or project is underway, but once the activity or project is completed, the SPI will be 1.00 regardless of how late the activity or project was delivered.
TABLE 13.3Interpretation of SPI
SPI
CPIAhead of ScheduleBehind ScheduleOn Schedule
1.00
Although it doesnt reflect the depth of the problem, being 18 months past our late finish.
Indexes to Monitor Progress