The answer is no. Keeping the size constant, studies show no correlation between CC and defect density (from a conversation between me and Radouane Oudrhiri, my mentor in lean six sigma). However, there are other two interesting correlations to study:
The first one is: Does CC strongly correlate with the duration of detecting and fixing defects? In other words, if CC is lower, would we spend less time debug and fix defects?
The second one is: Does CC strongly correlate with the Fault Feedback Ratio (FFR, the average number of defects introduced while coding one change or fixing one defect)?
It needs more investigation to see if anyone has ever studied this correlation empirically. But, my gut feeling and the feedback I get from the teams I work with is that there is strong positive correlation between cyclomatic complexity on one side and the duration of detecting and fixing defects or the change impact on another side.
This is a good experiment to do. Keep alert for the results!
The first one is: Does CC strongly correlate with the duration of detecting and fixing defects? In other words, if CC is lower, would we spend less time debug and fix defects?
The second one is: Does CC strongly correlate with the Fault Feedback Ratio (FFR, the average number of defects introduced while coding one change or fixing one defect)?
It needs more investigation to see if anyone has ever studied this correlation empirically. But, my gut feeling and the feedback I get from the teams I work with is that there is strong positive correlation between cyclomatic complexity on one side and the duration of detecting and fixing defects or the change impact on another side.
This is a good experiment to do. Keep alert for the results!
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