RESEARCH METHODOLOGY

Detailed explanation-1: -Theoretically, the difference between the two types of relationships are easy to identify-an action or occurrence can cause another (e.g. smoking causes an increase in the risk of developing lung cancer), or it can correlate with another (e.g. smoking is correlated with alcoholism, but it does not cause alcoholism).

Detailed explanation-2: -You can see that one way to look at variables is to divide them into four different categories ( nominal, ordinal, interval and ratio).

Detailed explanation-3: -That is, intervening variables explain why or how the relationship exists. For example, income is an intervening variable that helps explain the relationship between level of education (independent variable) and spending (dependent variable).

Detailed explanation-4: -Researchers often manipulate or measure independent and dependent variables in studies to test cause-and-effect relationships. The independent variable is the cause. Its value is independent of other variables in your study. The dependent variable is the effect. Its value depends on changes in the independent variable.