Type of sampling, if random sample is taken from a characteristic population, eg. Hindus, Muslims, Christians etc-

Ans. is 'c' i.e., Stratified random "Stratified random sampling is paicularly useful where one is interested in analysing the data by a ceain characteristic of the population, viz Hindus, Muslims, Christians, age group etc, - as we know these groups are not equally distributed in the population." ............ Park