Development and Application of New Quality Model for Software Projects

Table 3

Occurrence rating process SWFMEA.

Occurrence rating
Probability of failure	Rating	Criteria
Very frequently	10	Shows greater than 80% of defects attributable to subprocess failure
Frequently	8	Shows greater than 40% of defects & less than 80% of defects attributable to subprocess failure
Sometimes	4	Shows greater than 10% of defects & less than 40% of defects attributable to subprocess failure
Rare	1	Shows less than 10% of defects to subprocess failure.
Severity rating
Effect	Rating	Criteria
Very high	10	Rework is greater than 8 ph
High	7	Rework is greater than 4 ph & <8 ph
Moderate	5	Rework is greater than 2 ph & <4 ph
Low	3	Rework is greater than 1 ph & <2 ph
Very low	1	Rework is greater than 1 ph
Detectability rating
Detection	Rating	Criteria
Difficult	10	No defined methods for identifying the process error; only the o/p prdt analysis leads to detectability
Moderate	5	Can be identified in the exit phase of the process or subsequent process entry check
Easy	1	Process has built in checks for identifying subprocess failure