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. 2013 Apr 23;8(4):e61623. doi: 10.1371/journal.pone.0061623

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Normal quantile-quantile plots of arcsine-square-root-transformed (“arcsine”), logit-transformed (“logit”) and untransformed (“raw lm”) EPHEptax values (panels (a) - (c)). Panel (d) shows a beta quantile-quantile plot using the untransformed EPHEptax values. It is seen that EPHEptax is best approximated by a beta distributed random variable.