Earned Schedule Analysis, A Better Set of Schedule Metrics
Earned Schedule Analysis, A Better Set of Schedule Metrics
Earned Schedule Analysis, A Better Set of Schedule Metrics
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SPI(t) versus Total Float<br />
1.20<br />
0.80<br />
0.70<br />
1.00<br />
0.60<br />
0.80<br />
0.50<br />
SPI(t)<br />
0.60<br />
0.40<br />
0.20<br />
<strong>Analysis</strong><br />
This compares the trend in the<br />
schedule efficiency versus the<br />
amount <strong>of</strong> total float in the schedule.<br />
In this case, schedule efficiency has<br />
been declining and is poor. The red<br />
line shows the change in total float<br />
(in months), indicating that total float<br />
is now negative.<br />
SPI(t)<br />
Total Float (months)<br />
0.40<br />
0.30<br />
0.20<br />
0.10<br />
0.00<br />
-0.10<br />
Total Float (months)<br />
0.00<br />
Feb-03 Mar-03 Apr-03 May-03 Jun-03 Jul-03 Aug-03 Sep-03 Oct-03<br />
-0.20
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