What distribution is shown by this histogram?

[Nyasha]

So l generated a 100 000 data sets in Matlab each consisting of 80 random poisson distributed numbers. I then calculated the p-values for each data set and stored them into a vector which l used to make this histogram. I was wondering, what distribution is shown by this histogram

 

[chiro]

Hey Nyasha.

Can you outline what algorithm or transformation of the 80 Poisson distributed simulator calculated results you did?

 

[Bacle2]

Just curious: what type of general techniques there are to recognize the distribution

of data? I know there are ways of comparing against a normal,but not of a way of

deciding the general distribution of some data. And yes, I know there are

goodness-of-fit tests, but this is more an after-the-fact approach.

 

[Stephen Tashi]

if Nyasha can calculate a "p-value" then obviously he must have assumed some specific probability distribution for some statistic. If his assumption is correct, the empirical distribution he had should approximate a "probability of a probability". For example if a random variable X is normally distributed then one may define another random variable Y as: Y = the probability of the value of X that was observed.

 

[blue_raver22]

?

Based on the information provided, it appears that the distribution shown by this histogram is a Poisson distribution. This is because the data sets were generated using a Poisson distribution and the p-values were calculated for each set, resulting in a histogram that displays the frequency of these p-values. The shape of the histogram is likely to resemble a bell curve, with the majority of the data clustered around the mean p-value. This is a common characteristic of the Poisson distribution. However, without further information about the data and the specific parameters used in the generation of the data sets, it is not possible to definitively determine the distribution shown by the histogram. Additional analysis and statistical tests may be needed to confirm the distribution.