9.3 Data Collection Review

_________ sample

Members of a population can volunteer to be in the sample.

• Cluster

• Systematic

• Stratified

• Self-Select

• Convenience

_________ Sample

A rule is used to select members of a population.

• Cluster

• Systematic

• Stratified

• Self-Select

• Convenience

________ Sample

Only members of a population who are easy to reach are selected.

• Cluster

• Systematic

• Stratified

• Self-Select

• Convenience

________ Sample

A population is divided into smaller groups that share a similar characteristic. A sample is then randomly selected from each group.

• Cluster

• Systematic

• Stratified

• Self-Select

• Convenience

_________ Sample

A population is divided into groups, called clusters. All of the members in one or more of the clusters are selected.

• Cluster

• Systematic

• Stratified

• Self-Select

• Convenience

An ___________ imposes a treatment on individuals in order to collect data on their response to the treatment. The treatment may be a medical treatment, or it can be any action that might affect a variable in this method, such as adding methanol to gasoline and then measuring its effect on fuel efficiency.

• Survey

• Simulation

• Experiment

• Observational Survey

An __________ observes individuals and measures variables without controlling the individuals or their environment. This type of study is used when it is difficult to control or isolate the variable being studies, or when it may be unethical to subject people to a certain treatment or to withhold it from them.

• Survey

• Simulation

• Experiment

• Observational Survey

A __________ is an investigation of one or more characteristics of a population. In this method, every member of a sample is asked one or more questions.

• Survey

• Simulation

• Experiment

• Observational Survey

A __________ uses a model to preproduce the conditions of a situation or process so that the simulated outcomes closely match the real-world outcomes. This method allows you to study situations that are impractical or dangerous to create in real life.

• Survey

• Simulation

• Experiment

• Observational Survey