THE SCIENTIFIC METHOD



Question: How does color influence people's food choices?
Hypothesis: I think that if people see a red cookie, then they will choose it over any other color of cookie offered to them.
Controlled variables: Type of cookie, color of cookies, age and gender of people being offered cookies, size and shape of cookies, temperature of cookies, "doneness" of cookies.
Correct
One of the variables listed should not be included
More variables need to be controlled
These are not controlled variables