What term describes all the cases in a study from which samples can be drawn?

The term that describes all the cases in a study from which samples can be drawn is referred to as the population. In research, the population encompasses the entire group of individuals or instances that researchers are interested in studying. This concept is crucial because it defines the broader context in which the research findings will be applicable.

For example, if a researcher is studying the dietary habits of high school students in a particular city, the population would include all high school students in that city. From this population, researchers can then draw samples to conduct their studies, allowing them to make inferences about the entire group based on the analysis of these smaller, manageable subsets.

The other terms provided relate to different aspects of research. A sample is a subset of the population, selected for a study to represent the larger group. A subset also refers to a smaller group that is part of a larger population, but it doesn't encompass the entire population itself. A variable, on the other hand, relates to the characteristics or properties that can vary among the cases being studied, but it does not define the scope of the cases available for sampling.