A scatterplot is a type of plot that shows the relationship or trend between two types of data. The values are depicted by dots; after all values are plotted, a trend line is added in order to determine if there is a relationship between the two types of data. This scatter plot example shows the trend in a husband's age to a wife's age. The trend on this scatterplot shows that an increase in a husband's age will also cause an increase in a wife's age. Outliers are also present in scatter plots; they are the data points on the plot that are very much bigger or smaller than the majority of data points which are within the range of the trend line. In this example, you can clearly see the outliers which are further away from the other data points.
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