sampling method in which all the members of the populatiom has a pre- specified & equal chance to be a part of the sample
Reduce the possibilty of bias
Probability Sampling
Probability Sampling (4)
eevry element in the population has an equal chance of being selected in the sample
Simple Random Sampling
selectiom of units id base on sampling imterval (k)
Systemic Sampling
population is 1st divided into subgroups (strata) and a sample is selected from each stratum
Stratified Random Sampling
population is divided into clusters
clusters are randomly selected as sample
Cluster Sampling