A Researcher Trying to Eliminate the Rosenthal Effect Would Be

question 19

Multiple Choice

A researcher trying to eliminate the Rosenthal effect would be sure to:

• A) use a blind design.
• B) use a quasi-experimental design.
• C) randomly assign participants to two groups.
• D) randomly assign participants to three or more groups.

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Definitions:

Test For Equality

A statistical method used to determine if two or more groups have statistically significant differences in means.

Variances

Measures of how much a set of numbers is spread out from their average value, indicating distribution dispersion.

Population Parameters

Statistical measures that summarize characteristics for an entire population, such as mean, variance, or standard deviation.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, with a specified level of confidence.