The statistical analysis section (§5.5) can be enhanced by better explicating the calculations. The Scott-Knott algorithm is a particular clustering algorithm, and the reader needs some clarification how it contributes to the demonstration (this can be related to sections §6.1 and §6.3 about threats to validity).
Moreover, Fig.13 is still insufficiently clear. The authors added a lengthy legend; I tend to think this would better be placed in the text. The column on the left hand (i.e. "rank") is still unclear to me. I also wonder if the size of the clusters should not be reported, i.e. how many defects are considered when 50th percentile growth is calculated? Does the calculation hold even if the clusters are minuscule in size? This aspect doesn't seem to be mentioned in §6.
llayman
commented
8 years ago