On a 10-Item Test, Three Students in Professor Hsin's Advanced

question 129

Multiple Choice

On a 10-item test, three students in Professor Hsin's advanced chemistry seminar received scores of 2, 5, and 8, respectively. For this distribution of test scores, the standard deviation is equal to the square root of

• A)4.
• B)5.
• C)6.
• D)9.

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Definitions:

Deductive Reasoning

A logical process where a conclusion follows necessarily from the stated premises, moving from the general to the specific.

Concept

Any abstract characteristic or attribute that has the potential to be measured.

Indicator Variables

Variables, often used in statistical models, that take on a value of 0 or 1 to indicate the absence or presence of a categorical effect that may impact the result.

Validity

The degree to which an indicator accurately measures or reflects a concept.