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The single most important physical characteristic in an oral presentation is eye contact..
Type II Error
The error that occurs when a statistical test fails to reject a false null hypothesis—essentially, a false negative.
Null Hypothesis
A hypothesis that suggests there is no significant difference or relationship between specified groups or variables, serving as a default position until evidence suggests otherwise.
Sampling Error
The error that occurs due to selecting a sample instead of conducting a census of the entire population, leading to discrepancies between the sample and population parameters.
Statistical Power
The probability that a statistical test will correctly reject a false null hypothesis, related to the study's sample size and effect size.
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