Marge decides to study overweight people. she designs a study which will statistically compare weight level and level of physical activity to see if there is a significant statistical relationship between them. marge's study is typical of the method of research.

Marge's study is typical of the "Correlational" method of research.
In general, a correlational study refers to a quantitative technique for research in which you have at least 2 quantitative factors from a similar gathering of members, and you are endeavoring to decide whether there is a relationship between the 2 factors.

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