<Li> W: Wigner semicircle distribution, blue curve, excess kurtosis = − 1 </Li> <Li> U: uniform distribution, magenta curve (shown for clarity as a rectangle in both images), excess kurtosis = − 1.2 . </Li> <P> Note that in these cases the platykurtic densities have bounded support, whereas the densities with positive or zero excess kurtosis are supported on the whole real line . </P> <P> There exist platykurtic densities with infinite support, </P>

What is the degree of peakness of a distribution