There are many kinds of variables, but the most common distinction is between independent variables (the presumed causes) and dependent variables (the presumed effects). A research problem is a question about the relation of two or more variables, which frames a quantitative study.
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There are many kinds of variables, but the most common distinction is between independent variables (the presumed causes) and dependent variables (the presumed effects). A research problem is a question about the relation of two or more variables, which frames a quantitative study.