A Study Shows That People Who Chew Bubble Gum Have

question 93

Multiple Choice

A study shows that people who chew bubble gum have more cavities. Which criteria of casual inference does this example show?

• A) The two variables are not correlated.
• B) Multiple alternative explanations exist for the correlation.
• C) The presumed cause precedes the presumed effect in time.
• D) The study was conducted in an open environment.
• E) The sample size is large enough.