The Sample Size Needed for a Study Increases When

question 26

Multiple Choice

The sample size needed for a study increases when:

• A) the alpha level is increased from .01 to .05.
• B) the number of variables in the study increases.
• C) a one-tailed versus a two-tailed statistical test is used.
• D) the sensitivity of the instruments used is high.

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Definitions:

Projective Test

A psychological assessment tool aimed at eliciting a person's reaction to unclear stimuli, possibly uncovering concealed feelings and conflicts within.

Spurious

The relationship between an independent variable and a dependent variable is said to be spurious when a control variable causes change in both the independent and dependent variables.

Systematically

Done or conducted using a thorough, efficient, and methodical approach.

Variable

An element, feature, or factor that is liable to vary or change, often used in scientific research to measure and analyze differences.