FIGURE 7.4 Chart showing cumulative bugs and fixes
FIGURE 7.5 Chart showing cumulative bugs and fixes with the addition of extra effort from day 18
FIGURE 7.6 Chart showing cumulative bugs found, split out by priorities
600
500
400
300
200
100
0
1 3 5 7 9 11 13
Time measured in days
Bugs found and fixed
Bugs fixed
Bugs found
No. of bugs found
15 17 25 23 21 19
600
500
400
300
200
100
0
1 3 5 7 9 11 13
Time measured in days
Bugs found and fixed
Extra e?¬?ort
applied here
Bugs fixed
Bugs found
No. of bugs found
15 17 25 23 21 19
180
160
140
120
100
80
60
40
20
0
1 3 5 7 9 11 13
Time in days
Bugs by priorities
Low
Medium
High
Critical
Numbers of bugs
15 17 19 21 23 25
106 Manage Software Testing
Figure 7.7 shows the bugs found and predicted during the system testing period. The slight discrepancy
is normal, and can indicate either that the tests are more successful than expected or that the estimates
were a little optimistic.
Figure 7.8 shows that the system under test is composed of five features and that all the system tests are
expected to be run by the end of day 24.
Figure 7.9 shows the relationship between the number of units executed successfully and otherwise,
throughout a system test. Similar charts could be drawn to show the coverage of statements or features.
FIGURE 7.7 Chart showing bugs found and bugs predicted
FIGURE 7.8 Proportions of system tests run on 5 features
FIGURE 7.
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