Study Island
A marine biology team is studying a marine ecosystem near a shallow coral reef. For their study, they install ten stations, each supplied with a thermometer and a video camera. The thermometers measure the water temperature, and the video cameras monitor the activity of the fish in each location.
The team takes turns watching the video and determines the average activity of the different fish species at different water temperatures over many months.
After the study, the team reports the average activity and not the actual number of active fish because
A. they ran out of time to watch all the video.
B. they were too lazy to count all the fish.
C. average measurements simplify a complex system.
D. the average of a system is more complicated to measure.
