Figure 4From: Statistical methods for detecting and comparing periodic data and their application to the nycthemeral rhythm of bodily harm: A population based study Quantil-quantil-plot of residuals. Quantil-quantil-plot of residuals of d6 and d7 against standard normal quantiles (black cross). The gray line joins the first and the third quartile. The absence of large deviations between the black crosses and the gray line implies a normal distribution of the residuals.Back to article page