In a study every fouh student is selected in a class while sampling. This is a type of:-: (A) Simple random sampling, (B) Systematic random sampling, (C) Stratified random sampling, (D) Cluster random sampling
Answer is B. Systematic Random Sampling:- Based on sampling fraction: Every Kth unit is chosen in the population list, where K is chosen by sampling internal. Sampling interval (K) : Total no. of units in population / Total No of units in sample.