Density functions are nonnegative for all real numbers but greater than zero only at a finite or countably infinite number of points. Density functions are nonnegative for all real numbers and are ...

Let X₁ , X₂,..., Xn be a random sample of size n from a population with probability density function f(x), x > 0, and let X₁,n < · · · < Xn,n be the associated order statistics. Some characterizations ...

Continuous Variable: can take on any value between two specified values. Obtained by measuring. Discrete Variable: not continuous variable (cannot take on any value between two specified values).