1 Probability distribution of a random variable
Let us  look at the experiment of selecting one family out of ten families f1,  f2 , , f10 in
such a manner that each family  is equally likely to be selected Let the families f1,  f2, , f10  have 3, 4, 3, 2, 5, 4, 3, 6, 4, 5 members, respectively