Exercise 7 Page 613

What are the differences between an experiment, an observational study, a survey, and a simulation?

Simulation, see solution.

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We want to determine the type of study being conducted in the described situation.

A researcher uses a computer program to help determine how fast an influenza virus might spread within a city.

To do so, let's first recall the different types of studies and their definitions.

Study Type	Definition
Experiment	The sample is divided into one or more groups, that undergo a change in order to collect data on their response. The effects of the experiment are then measured and compared with other groups, for instance with a control group that does not undergo a change.
Observational Study	Members of a sample are measured or observed without being affected by the study.
Survey	Data are collected from responses given by a sample regarding their characteristics, behaviors, or opinions.
Simulation	Uses a model to reproduce a situation or a process so that the simulated outcomes closely match the real-world outcomes.

In our situation, the data are obtained from the computer program that reproduces a spread of influenza within a city. Therefore, the situation describes a simulation.

Subchapter links

Communicate Your Answer p.609

Monitoring Progress p.611-613

Exercises p.614-616

Exercise 7 Page 613

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