What is an example of an interpolation method mentioned in the context of the SYMBOL statement?

The interpolation method referred to in the context of the SYMBOL statement in SAS is specifically designed to define how a line is drawn between points in a graphic representation, such as a plot. The "Join" option is an interpolation method that connects consecutive data points with straight lines, creating a continuous line graph that visually represents the data.

Using the "Join" interpolation method allows for the effective visualization of trends and patterns in the data by clearly displaying the relationship between successive observations. This method emphasizes the connection between the points, which is essential in scenarios where the data points are sequentially related.

The other options—display, calculate, and export—do not correspond to interpolation methods associated with the SYMBOL statement. Display typically refers to how graphics or output is presented; calculate pertains to the computation of values; and export involves transferring data to different formats. Therefore, the "Join" option is indeed the most applicable example of an interpolation method in this context.