This is a quiz on elementary concepts of statistics.

Question 1:

Let's say that a statistical analysis of the people of the United States shows that Texans are on average taller, and that Texans also are on average richer. What conclusion can one draw from this result?

Let's say you're conducting a study to see whether a new experimental medication will cause bald men to grow hair. You divide your patients into 2 groups. To one group you give the medication. To the other group, you give a placebo. In this study, the correct terms for the taking of the medication and the growth of hair are the following.

Let's say you're conducting a survey of the people of the United States to find out how popular the president is. You randomly choose people to call, and make 1,000 phone calls to people scattered across the country. In this study, what is the statistics term for THE PEOPLE IN THE U.S., and what is the statistics term for THE PEOPLE YOU CALLED?

Let's say you want to know whether a medication is effective for curing the common cold. You take 1,000 people with colds, and divide them into 2 groups of 500. You give the medication to one group, and placebo to the other group. To make this a DOUBLE-BLIND study, what would you have to do?