A Researcher Is Interested in the Effects of a YouTube

question 71

Multiple Choice

A researcher is interested in the effects of a YouTube video on student learning of a topic in statistics (e.g., how to calculate a correlation coefficient) . He randomly assigns 50 students to one of two conditions. In one condition, the students read a traditional text. In the second condition, students view a YouTube video. He measures their performance on a post-test. In this scenario, type of instruction (text versus video) serves as the:

• A) Independent variable
• B) Dependent variable
• C) Moderating variable
• D) Mediating variable

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Definitions:

Ironclad Ship

A type of warship in the mid-19th century, protected by iron or steel armor plates, significantly changing naval warfare.

Telegraph

An early form of long-distance communication technology that transmitted messages in the form of electrical signals.

Union Forces

Refers to the military forces of the United States (the North) during the American Civil War, fighting against the Confederate States.