These graphs were plotted using these instructions to R:

untreated=c(45, 87, 123, 120, 70) treated=c(51, 71, 42, 37, 51, 78, 51, 49, 56, 47, 58) # Plot a q-q plot par(mfcol = c(2, 2)) qqnorm(untreated, main="untreated") qqline(untreated) qqnorm(treated, main="treated") qqline(treated) qqnorm(log10(untreated), main="log untreated") qqline(log10(untreated)) qqnorm(log10(treated), main="log treated") qqline(log10(treated))