Examlex
The researcher should avoid asking leading or overly personal questions in most questionnaires.
Randomly Chosen Groups
Groups formed without any predetermined pattern, often used in experimental designs to ensure objectivity.
Confounding Variable
An external factor in a study that could influence or mix up the results, making it hard to draw clear conclusions.
Wearing T-Shirts
The act of putting on shirts made of a lightweight fabric, typically short-sleeved and collarless, as a form of casual wear.
Experimental Group
In scientific research, the group of subjects that receives the treatment or condition under investigation.
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