Scatter plot is used to investigate the change of a variable over a time.

To construct a scatter plot, two data sets or variables are needed, usually, these two data sets or variables are named as X and Y.

The pair of the data point for a specific observation, (X, Y), is represented by a dot or a symbol of convenience.

Scatter plot gives a good indication of the correlation between two variables.

Scatter plot is a good indicator of the value of the correlation coefficient.