A Researcher Selects a Sample of 24 Participants and Has

question 43

Multiple Choice

A researcher selects a sample of 24 participants and has them complete a survey on dating preferences.In this example,what are the degrees of freedom for sample variance and what does this represent?

• A) df = 24; it represents the number of scores that are free to vary in a sample.
• B) df = 23; it represents the number of scores that are free to vary in a sample.
• C) df = 23; dividing SS by df makes the sample variance a biased estimator of the population variance.
• D) df = 24; dividing SS by df makes the sample variance an unbiased estimator of the population variance.

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Definitions:

Pressure

The force per unit area applied to an object in a direction perpendicular to the surface.

Eustress

A positive form of stress having a beneficial effect on health, motivation, performance, and emotional well-being.

Conflict

The psychological stress occurring when a person has to choose between different and incompatible or opposing goals.

Pressure

The force applied perpendicular to the surface of an object per unit area over which that force is distributed, often measured in units such as Pascal or psi.