This method of data collection involves making mathematical and physical models of systems that might be too dangerous or impractical to otherwise study.

A. Observation
B. Experiment
C. Simulation
D. Sampling

This sampling method involves picking groups randomly , but then surveying everyone within those groups.

A. Convenience
B. Cluster
C. Systematic
D. Stratified

This sampling method involves giving the survey to whoever can be found the easiest.

A. Convenience
B. Cluster
C. Systematic
D. Stratified

This sampling method involves constructing a sample with demographics proportional to that of tge population , with respect to the (hypothesized) determining variables.

A. Convenience
B. Cluster
C. Systematic
D. Stratified

This sampling method involves assigning each potential data point a number and observing every nth point.

A. Convenience
B. Cluster
C. Systematic
D. Stratified



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