Examlex
In each set below, one sentence in the set contains an error. Select the letter of the sentence that contains an error. Which sentence contains an error?
Preexisting Groups
Groups that have been formed before the implementation of a study, not generated by random assignment or manipulation by the researcher.
Random Assignment
A method of assigning individuals or units to different groups in an experiment using randomization to ensure every participant has an equal chance of being placed in any group.
Independent Variable
A variable whose variation does not depend on that of another, often manipulated by the researcher to determine its effect on a dependent variable.
Research Hypothesis
An assertion or conjecture regarding the outcome of a study, proposing a potential relationship between variables.
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