The temperature of the water effects how dense it is--the colder the water the more dense it is.
Garbage being thrown into water decreases the density--therefore decreased pollution equals increased density.
Answer:
IVxPV factorial research design
Explanation:
IV x PV design is a factorial design containing both an independent experimental variable (IV) and a non-experimental participant variable (PV).
It enables researchers to examine how multiple categories of people react to a certain variable being controlled, it is used in two or more independent variables to examine the respective key effects and interactions.
The researcher observes the number of aggressive acts displayed by the children after they are done watching the aggressive cartoon and measures it. This research design would be an example of IV x PV design. It helped the researcher observe how the different children (variables) reacts to a Factor.
