A student wants to perform a taste test on some friends. She will tell them to close their eyes and then give them each a small cube of apple, pear, and potato.
The testers will first hold their noses as they taste the cubes. Then they will taste
the cubes again without holding their noses.
What should the experimenter be sure to keep constant in this
experiment?
8 of 11 QUESTIONS
The responses of each friend
The color of each cube
The number of friends tested
o
The size of each cube