How Much Must Two Means Differ Before We Can Consider

question 31

Multiple Choice

How much must two means differ before we can consider the difference "real" and not due to chance? To answer this question,we must use

• A) coefficients of correlation.
• B) tests of statistical significance.
• C) graphical statistics.
• D) random selection.

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Definitions:

Dependent Variables

Variables in experimental research that are expected to change as a result of the manipulation of the independent variable.

Third-variable Problem

A challenge in research where a variable not accounted for influences the relationship between the studied variables, potentially leading to mistaken conclusions.

Schizophrenia

A grave mental illness distinguished by deviations in thought, perception of reality, emotions, verbal expression, self-perception, and behaviors.

Parental Income

The combined earnings of a child's mother and father or the income of a single parent.