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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