quantitative study

Which Of The Following Aspect Of The Study Is Considered A Measure To Maintain The Uniformity Of Conditions Of A Quantitative Study?

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Which Of The Following Aspect Of The Study Is Considered A Measure To Maintain The Uniformity Of Conditions Of A Quantitative Study? The term control refers to measures used by the researcher to keep the conditions of the study uniform. Which of the following is the area of concern with regard to external validity? There