By Testing Their Predictions with the Observational Method of Science

question 125

Multiple Choice

By testing their predictions with the observational method of science, psychologists are using a(n)

• A) correlation coefficient.
• B) empirical approach.
• C) standard deviation.
• D) independent variable.

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Definitions:

Null Hypothesis

A statistical premise asserting the absence of a relationship or impact between variables, tested to determine if an observed association is likely due to chance.

Directional

Refers to hypotheses in research that predict not only the existence of a relationship between variables but the direction of that relationship as well.

Non-directional

A type of hypothesis that does not specify the direction of the expected relationship between variables.

Standard Error

A measure indicating the amount of variation or dispersion of a set of values; specifically, it reflects how much sampling variability a statistic possesses.