Statistical study to identify patterns or trends in a situation but not the cause and effect (causal) linkages among its different elements. Descriptive studies (such as a cross- sectional study) help in generating hypothesis on which further research may be based descriptive studies include case reports case series, surveillance system,  Co-relational (sometimes called ecological studies), cross-sectional studies and cluster investigations.

         correlational  studies are used to look for relationship between variables. There are three possible result of a correlational study: a positive correlation, a negative correlation and no correlation. The coefficient is a measure of correlation strength and can rare from -1.00 to +1.00

What is Positive Correlation?

It is both variable increase or decrease at the same time. A correlation coefficient close to +1.00 indicates a strong positive correlation.

What is Negative Correlation?

Indicates that as the amount of one variable increase, the other decreases (and vice versa). A correlation coefficient close to -1.00 indicates a strong negative correlation.

What is No Correlation?

Indicates no relationship between the two variable. A correlation coefficient of O indicates no correlation.

Types of correlation studies:

1). Naturalistic Observation

2). The survey Method

3). Archival Research