A simple random sample is a subset of a statistical population where each member of the population is equally likely to be ...

Stratified random sampling is a method of sampling that divides a population into smaller groups that form the basis of test ...

where is the true probability of observing the jth response level in the ith population. The product multinomial distribution is simply the product of two or more individual multinomial distributions ...

Suppose that the sample of students described in the previous section was actually selected using stratified random sampling. In stratified sampling, the study population is divided into ...