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2
12.8
3.8
35
21
8.6
table 19.2 Process Performance Baseline (PPB) for new
de elopment Producti ity
A High-Maturity Perspective n 261
Line Number
Est??™d Number of
Elements
Req Phase
Design Phase
Implement Phase
Integration Phase
System Test
Phase
Total E?¬?ort
1
PPB Elements
mean
mean
mean
mean
mean
2
Number of Complex Reqs
75
35
49.8
3
100
21
31.7
4
200
8.6
13.3
5
TBD
8.6
6
TBD
21.0
7
TBD
4.3
8
TBD
175.5
9
TBD
23.5
10
TBD
12.4
11 12
Historical E?¬?ort Distribution
20%
30%
20%
15%
15%
100%
13 14
Estimates
15
Based on PPB Elements
6,445
9,565
0
0
0
16
Based on E?¬?ort Distribution
6,445
9,668
6,445
4,834
4,834
32,225
17 18
Actuals by Phase
6,752
0
0
0
0
0
19
20
Prediction Based on Actual WhenAvailable or Best Estimate
6,752
9,565
6,445
4,834
4,834
32,430
Number of Nominal Reqs Number of Simple Reqs Number of Interfaces Number of Design Pages Number of Objects Number of Subsystems Number of Components Number of Test Scenarios
t
able 19.


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