Merits of Scatter Diagram
1. Simplicity: Scatter Diagram is a simple and non-mathematical method to study correlation between two variables.
2. First Step: It is the first step of investigating the relationship between two variables.
3. Easily Understandable: One can easily understand and interpret scatter diagrams. Besides, only at a single glance at the diagram, one can easily tell the presence or absence of correlation.
4. Not Affected by Extreme Items: The size of extreme values does not affect the scatter diagram. It is a quality which is not present in most mathematical methods.
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