(i) The values of the statistical measures based on the sampled nits are called values of statistic

(ii) In the simple random sampling technique, the element of the population and the unit of the sample are different

(iii) Snow-ball sampling technique is a probability based sampling technique

(iv) The “ law of statistical regularity “ and the “ law of inertia of large numbers” are the main bases of the sample to become representative of the population