What term describes easily accessible subgroups of the population?

The term that describes easily accessible subgroups of the population is "convenience samples." Convenience sampling is a method often used in research where the samples are taken from a group that is easy to reach or readily available. This can involve selecting participants based on their proximity, their availability during the study, or any other criteria that allow for quick and easy access.

This method is particularly useful when time or resources are limited, or when researchers seek to gather preliminary data quickly. However, it is important to note that while convenience samples can provide some insights, they may not always be representative of the larger population, possibly leading to biases in the results.

In contrast, other sampling methods, such as random samples, stratified samples, and systematic samples, involve more structured approaches that aim to reduce bias and better represent the target population.