The uniform probability density function is given by fX(x)=1b−aa≤x≤b=0otherwise
where the parameters a and b define the range of the uniform distribution. The uniform distribution function is FX(x)=x−ab−aa≤x≤b.
The mean value and standard deviation of the random variable X for the uniform distribution are given by μX=a+b2
and σX=b−a2√3.
The uniform probability density function, as shown in the figure below, is used when only a range of possible values for
a random variable is known. |