Depending on where and how our plots will be presented, they may or may not be accompanied by figure caption that describes the background and results that the data plot is illustrating. We may need to add a title to succinctly summarize and communicate the result.

Meanwhile, although axis labels suffice to identify data series for some figure types, such as bar plots and box plots, there may be cases where we need an extra legend key for this purpose. The following are ways to add and adjust these text elements to make our plot more informative.