Figure 1 shows that the coefficient of variation of the growth rate appears to be constant, independently of the condition and the average growth rate (consistently with the collapse hypothesis) for some datasets (Taheri-Araghi et al., 2015 ), while it shows a decreasing trend for others (Kiviet et al., 2014 ; Kennard et al., 2016 ; Wallden et al., 2016 ).
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