When conducting research, a stratified sample is a technique used to ensure that the sample selected is representative of the entire population. However, researchers can use other similar techniques to achieve the same outcome. Some of the synonyms for a stratified sample include quota sampling, proportional sampling, and random sampling. Quota sampling involves identifying specific groups within the population and ensuring their representation in the sample, while proportional sampling involves selecting individuals in each group in proportion to their representation in the population. Random sampling involves selecting individuals randomly from the entire population irrespective of any specific groups. Though these techniques have different ways of selecting the sample, their goal is to achieve a representative sample for the research.