Contrast the Concepts of Internal and External Validity with Regard

question 66

Essay

Contrast the concepts of internal and external validity with regard to research findings.

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Definitions:

Null Hypothesis

A statement in statistical analysis that proposes there is no significant effect or difference between certain variables or groups.

Statistical Test

A method of making decisions or inferences about population parameters based on sample data, often involving a comparison between an observed test statistic and a critical value.

Power

The probability that a statistical test will correctly reject a false null hypothesis; it measures a test's sensitivity to detect an effect if there is one.

Null Hypothesis

A hypothesis that proposes there is no significant difference or effect, and any observed difference is due to sampling or experimental error.