<P> Probability sampling includes: Simple Random Sampling, Systematic Sampling, Stratified Sampling, Probability Proportional to Size Sampling, and Cluster or Multistage Sampling . These various ways of probability sampling have two things in common: </P> <Ol> <Li> Every element has a known nonzero probability of being sampled and </Li> <Li> involves random selection at some point . </Li> </Ol> <Li> Every element has a known nonzero probability of being sampled and </Li> <Li> involves random selection at some point . </Li>

Interval sampling methods and measurement error a computer simulation