Whereas Internal Validity Refers to How Well the Study Establishes

question 44

Multiple Choice

Whereas internal validity refers to how well the study establishes causal relationships, external validity refers to ____.

• A) how well the study establishes integrity
• B) how well the study establishes statistical significance
• C) the generalizability of the results
• D) how well the study establishes non-causal relationships

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Definitions:

Z-test Approximation

A statistical method that uses the Z-distribution to approximate the significance of observed differences, typically used when sample sizes are large and the standard deviation is known.

Wilcoxon Test Statistic

A non-parametric test statistic used to compare two paired samples to assess whether their population mean ranks differ.

Null Hypothesis

A hypothesis that assumes no statistical significance or effect exists in a set of observations.

Level Of Significance

The threshold below which a statistical result is considered significant, indicating that an observed effect is unlikely to be due to chance alone.