In Natural, or Quasi-, Experiments

question 101

Multiple Choice

In natural, or quasi-, experiments,

• A) random assignment helps protect against reduction in the accuracy of the findings.
• B) researchers combine random assignment with the matching technique.
• C) cause-and-effect inferences cannot be made.
• D) lack of random assignment substantially reduces the precision of the research.

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Definitions:

Cyclic Variation

Represents recurrent fluctuations in a time series data over a period longer than one year, often tied to economic, environmental, or social cycles.

Indications

Signs or symptoms that suggest the presence of a particular condition or the need for a specific treatment or intervention.

Sample Proportions

The fraction or percentage of items in a sample that are part of a particular category or characteristic.

Lower Control Limit

The lowest boundary in a control chart used to monitor process variability; falling below this limit signals an out-of-control process.