Scatterplots are the tools of choice for displaying time-dependent data that doesn't necessarily makes a smooth curve. Often you only have one value per time st

Scatterplots are the tools of choice for displaying time-dependent data that doesn't necessarily makes a smooth curve. Often you only have one value per time stamp, so overlap is not a problem. In fact, the wikipedia article even says "A scatter plot is used when a variable exists that is under the control of the experimenter". https://en.wikipedia.org/wiki/Scatter_plot https://en.wikipedia.org/wiki/Scatter_plot If the author had read that part of the wikipedia article, I guess his claim would have been more specific :-)