# Is there a distribution which looks like this?

I was playing around with some data. And I got a distribution which looks like the following. Does this resemble any of the known distributions?

• Lognormal distributions are similar, except they vanish at 0. This might just be a truncated Gaussian. – Paul Jun 6 '16 at 11:55
• It is a good idea to log-log plot your histogram so as to get an idea of the decay rate of the tail. If what you get is linear then your tail has a power law; if what you get is concave, then your tail decays faster than polynomially, e.g. exponentially or like a Gaussian. This is hard to see from a bare histogram. (It's also often hard to see from data, because the tail simply doesn't contain that many data points. Still, it's something to try.) – Ian Jun 6 '16 at 12:14
• @Paul With the lack of symmetry, it is doubtful that it is a truncated Gaussian, but hopefuly, a Rayleigh distribution... – Jean Marie Jun 6 '16 at 13:32
• @JeanMarie rayleigh vanishes at 0, right? – dineshdileep Jun 6 '16 at 15:37
• Yes, a Rayleigh pdf vanishes at 0, but it it is not contradictory with the fact that the initial bin [0, 0.02] collects non-zero values... thus has a non void content. – Jean Marie Jun 6 '16 at 15:42

This could be a Gamma distribution. These distributions contain a factor of the form $x^n e^{-\lambda x}$. Run some through a grapher and see what you think.