1. Question: formulate questions that
explore whether or not a relationship exists in a real-world context. The question
needs to be clearly stated and based on collectable data. Not all questions can be
"Data as they are" questions can be answered:
If the U.S. Presidential elections were held today, what percent of Americans would
vote for Al Gore as president?
"What-if questions under replicable circumstances" can be answered:
Among all American school children age 6 to 12, would giving Vitamin C prevent colds?
(You can imagine testing this out on more and more children.)
Data from nonreplicable events, in general, can NOT be answered!
"How many U.S. troops be in Bosnia if the American Revoluation had failed?"