Examlex
How did the emergence of the factory system change the face of American labor during the first half of the nineteenth century?
Type I Errors
Incorrectly rejecting a true null hypothesis, also known as a "false positive" finding in research.
Type II Errors
An error that occurs in statistical hypothesis testing when a false null hypothesis is not rejected, misinterpreting the absence of an effect or difference when one actually exists.
Independent Variable
A variable that is manipulated in an experiment to determine its effect on the dependent variable.
Experimental Manipulation
Involves altering one or more variables in a controlled setting to study their effects on other variables, a key method in experimental research designs.
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