what is the best example of a population 
imagine you re a teacher trying to see how well your fifth grade math class did on a standardized test compared to all fifth graders in the u s the population would be all fifth grade math scores in the country the bottom linea population is the statistical pool being studied from which data is extracted populations can be difficult to gather data on especially if the studied topic is expansive and widely dispersed studying humans is an excellent example there s no way to gather data on every brown eyed person in the world so random sampling is the only way to infer anything about that population populations in investment analysis are generally specific types of assets being analyzed these data sets are generally small in statistical terms and easy to acquire because they ve been recorded unlike data on living organisms which is much more difficult to obtain 