The group of individuals who actually have a chance of being selected for a survey is called the ______________________________. The set of all individuals who belong to the group being studied by a survey is called the _________________________.

Before a nation wide election, a polling place was trying to see who would win. Which choice best represents the POPULATION being studied?

Before a nationwide election, a polling place was trying to see who would win. Which choice represents the best and most realistic SAMPLE to take for this study?

You want to poll the members of your grade and see what their favourite type of ice cream is. You don't have time to poll everyone. Which method is most likely to produce a random sample of the members of your class?

A psychologist is studying the sleep patterns of the 3960 students at her university. She decides to start by asking a sample of 30 students how many hours of sleep they get weekday nights. She assigns each student a number from 1 to 3960. She selects the sample by randomly choosing one of the first 132 numbers and every 132nd number thereafter. Which sampling technique is she using?