Since it is generally impossible to study an entire population (every individual in a country, all college students, every geographic area, etc.), researchers typically rely on ** sampling **to acquire a section of the population to perform an experiment or observational study. It is important that the group selected be representative of the population, and not … Read more

SIMPLE RANDOM SAMPLING:
In this type of sampling, the chance of any one element of the parent pop being included in the sample is the same as for any other element. By extension, it follows that, in simple random sampling, the chance of any one sample appearing is the same as for any other. There … Read more