Observational data
Section titled “Observational data”Population of interest
Section titled “Population of interest”A specific group that a researcher aims to study in order to draw meaningful conclusions or make statistical inferences about its characteristics.
Sample of a population
Section titled “Sample of a population”A subset of the population of interest. Used to represent the population in statistical analysis.
Variable of interest
Section titled “Variable of interest”A changing quantity which is being measured in an experimental study.
Census
Section titled “Census”The process of gathering information about the members of a given population of interest.
Cohort
Section titled “Cohort”A group of subjects who share a particular event during a particular time duration.