Examlex
A loose connection between theory and method threatens _________ validity.
Specified
Clearly stated or identified; set forth explicitly.
Z-Test
The Z-test is a statistical procedure used to determine if there is a significant difference between sample and population means under the assumption of a known variance.
Two-Sample Hypothesis Tests
Involves comparing two groups to determine whether there's a statistically significant difference between their means or proportions.
Proportions
A statistical measure that reflects the relative size of one part compared to the whole, often expressed as a fraction or percentage.
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