Why is the matlab command called unidrnd?
It come from the notion of a special
type of distribution function m which assigns the same
mass to all outcomes, then because the distribution
function sums to one, each mass must be
Example: Pick at ``random'' among 100 people, means pick giving everyone an equal chance of being picked. Each person is equally likely to be chosen. Implicit in many every day use of random is the fact that the draw should be fair or unbiased.
If is the outcome space and A some event:
Property 1: If all outcomes in a set
are equally likely
the probability of the event is the number of outcomes in
A over the number of outcomes in .
Suppose the experiment is to draw a random number between 1 and 100, each with the same probability, draw uniformly at random.