I want to know whether drivers who drive with their headlights on in the daytime are less likely to have accidents. I require 100 drivers from a large company to drive with their lights on during the day and require another group of 100 drivers from the same company to keep their lights off. I then keep accident statistics for several years to see if there are any differences. Having the lights
on or off in the daytime is
A) the dependent variable.
B) a confounding variable.
C) a random variable.
D) the independent variable.
D
You might also like to view...
A person has the , meaning he does not have to be subjected to risky psychological or medical procedures such as surgery without proper consent
a. right to refuse treatment b. right to the least restrictive treatment c. right to insurance coverage d. right to ethical treatment
In which of Piaget's stages of cognitive development is a child most likely to lack the skill of object permanence?
A) The preoperational stage B) The formal operational stage C) The sensorimotor stage D) The concrete operational stage
The principle of ________suggests we are more likely to comply to a request made by someone in charge
a. similarity b. liking c. authority d. commitment
Cara binges on chocolates, then induces vomiting, and then swallows laxatives. Cara probably suffers from ________.
A. anorexia nervosa B. bulimia nervosa C. leptin deficiency D. Prader-Willi syndrome