Simple random sampling is a common technique used in research to select a representative sample from a larger population. However, there are many synonymous terms for this method, such as basic probability sampling or equal chance sampling. Another term often used is random sampling with replacement, which guarantees that each element in the population has an equal chance of being selected more than once. Stratified random sampling is another variation, where the population is divided into subgroups, or strata, and a random sample is selected from each group. Finally, cluster sampling involves dividing the population into clusters or groups, and randomly selecting one or more clusters to be part of the sample.