Data Collection Quiz

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 studied, or when it may be unethical to subject people to a certain treatment or to withhold it from them.

• Observational Survey

• Experimental Study

• Controlled Trial

• Case-Control Study

_______ sample.

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

• Self-Select

• Random

• Systematic

• Cluster

_______ Sample.

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

• Convenience

• Random

• Systematic

• Stratified

A _______ uses a model to reproduce 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.

• Simulation

• Experiment

• Observation

• Measurement

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

• Experiment

• Observation

• Census

_______ Sample:

A rule is used to select members of a population.

• Systematic

• Random

• Stratified

• Cluster

_______ Sample:

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

• Cluster

• Systematic

• Stratified

• Simple Random

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.

• Experiment

• Survey

• Observation

• Census

______ Sample:

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

• Stratified

• Random

• Systematic

• Cluster