List and discuss the different types of probability sampling procedures.
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Probability sampling is a sampling approach in which a researcher picks samples from a larger population using a method based on the probability principle . To be considered a probability sample , it is essential to utilize a random selection technique to choose participants . The most crucial criterion for sampling procedures is that everyone in your group has an equal and predictable chance of getting selected from the sample . The kinds of probability sampling processes that may be utilized are random sampling , systematic sampling , cluster sampling , and stratified sampling . Samples selected at random – The fact that all of the samples picked at random have an identical chance of being chosen distinguishes this kind of sampling . This method of sampling is very effective since it removes the chance of bias throughout the sample process . This kind of sampling is often used in the provision of customer satisfaction services , in which consumers who have bought a product are randomly called and their feedback is acquired . For example , if you were to choose 100 individuals from the whole population of the United States , compiling a full list of everyone would be quite tough . Instead , the investigator picks regions ( for example , cities or counties ) at random and then selects from within those areas at random . Systematic sampling – When the population is homogenous in character and evenly scattered across the population , this kind of sampling is used . This sort of sampling works best when there is no underlying pattern in the data . When a researcher selects every fourth customer who departs a retail business and asks for his input , this kind of sampling is used . Take , for example , a random sampling of every fifth person . The sampling procedure is a more advanced version of the classic probability method , in which each member of a group is randomly chosen at regular intervals to create a sample , which is then evaluated for trends . This sampling approach ensures that every individual in the pop