Line-Up Jittered Scatter Plots

A line-up jittered scatter plot, also known as a bee swarm plot, is displayed in Figure 4.4 of Chapter 4, which provides a more organized and better data visualization than its randomly jittered counterpart in Figure 4.3. A line-up jittered scatter plot or bee swarm plot is a new type of jittered scatter plot where the data points with differences within a certain limit or range on one axis (usually the y-axis) are lined-up together to be positioned in the same group. The data points within the same line-up group sometimes can also be reassigned to have the same value for better data visualization. The certain limit or the range of the data depends on the nature of the data and normally the difference within the same line-up group is small enough to be neglected or not meaningful; for example, 0.5 mm Hg for intraocular pressure (IOP) values in glaucoma clinical trials or 0.15 kg in body weight measurement, and so on.