标杆数据（来自ISBSG的最新报告）
表1 阶段分布
|
|
Plan |
Spec |
Build |
Test |
Impl |
|
|
5% |
23% |
41% |
22% |
9% |
|
New Dev |
6% |
20% |
48% |
17% |
9% |
|
Re-Dev |
7% |
9% |
29% |
14% |
41% |
|
Enhancements |
3% |
27% |
37% |
26% |
7% |
表2 缺陷密度（Defect density in defects per 1000FPs ）
|
|
N |
Min |
Medium |
Max |
|
New Dev |
73 |
0.001 |
0.016 |
0.639 |
|
Re-Dev |
4 |
0.004 |
0.028 |
0.033 |
|
Enhancements |
56 |
0.001 |
0.022 |
0.565 |
表3功能点分布
|
|
New Dev |
Re-Dev |
Enhancements |
|
N |
Added |
Changed |
Deleted |
Total |
|
|
311 |
17 |
408 |
306 |
83 |
454 |
|
Inputs |
29.3 |
32.5 |
31.9 |
37.8 |
38.0 |
34.4 |
|
Outputs |
24.3 |
23.8 |
31.4 |
25.9 |
35.1 |
29.4 |
|
Enquires |
14.8 |
9.2 |
13.5 |
16.0 |
10.7 |
14.1 |
|
Files |
23.5 |
25.0 |
15.6 |
18.0 |
11.1 |
16.5 |
|
Interface |
8.1 |
9.5 |
7.5 |
2.3 |
5.1 |
5.6 |
|
|
|
Sum |
55.3 |
42.0 |
2.7 |
|
[注]：这些数据特别适合采用FPA的项目作比对，采用SLOC的项目也可以换算成FP后进行比对。 
|
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