A researcher who is interested in the behavior of chimps believes that temperature is related to aggression in this species of animal. She goes out to her local zoo during a particular weekend and adjusts the temperature of their climate-controlled habitat to 50-degrees, 70-degrees and 90-degrees Fahrenheit over the course of three days, noting the number of aggressive acts she observes at each temperature level.

A)What is the independent variable?

B)What is the dependent variable?

C)Is the dependent variable discrete or continuous?

D)What scale of measurement (nominal, ordinal, interval or ratio) is used to measure the dependent variable?

E)What research method is being used (experimental or observational), and why?