Which of the following data types would be considered categorical data (qualitative). Responses

• weight of a newborn elephant
• zip codes in the state of New York
• height of a basketball player
• grade point average of seniors at Edison

Determine whether the data set is determined from a sample or population:

A survey of 1068 students was taken from a university with 10,500 students.

Responses

• Sample
• Population

Many people have trouble falling asleep. Researchers wish to determine if a new drug will help. To determine if the new medication is more effective than two popular sleep-inducing products currently on the market, the researchers use 140 volunteers who report having trouble sleeping. Sixty of the volunteers are randomly assigned the new drug, and 40 each are randomly assigned to the other two medications. This is an example of :

• an experiment
• an observational study