3. C1
C5
C3
C4
C2
C6
C1 C4
CR-A
C5 C6C2 C3
CR-B
BR-1
CR-B

4. Fixed
30%
Fixed
(Duplicate)
15%
Not Fixed
55%

6. 11
1 1 1 1
U1 U2 U3 U4 U5
3 3 3 3 3
U1 U2 U3 U4 U5
Low Entropy High Entropy

7. HighLow
Very
Low
Med.

8. 27%
13%
40%
20%
Isolated Moderate High Skew

10. HighLow
Very
Low
Med.

11. 80% of bugs are ranked high by developers
16% of these bugs are never fixed
Fixed bugs take 52% more time than “low” priority bugs
1,680
1,104
High priority
(Isolated Region)
Low priority
hours
hours
(across all regions)

12. 16%
9.5%
6%
9%
Isolated Moderate High Skew

14. 1,296
2,279
Low Entropy High Entropy
9
20
Low Entropy High Entropy

15. 1,608
4,032
4,993 5,063
Isolated Moderate High Skew

16. 9
20 22
67
Isolated Moderate High Skew

18. HighLow
Very
Low
Med.