The best graph to show Flores del Mundo’s membership trends over the course of the year will be line graph, with each month as a data point. The line will provide a clear visual trend of the number of memberships.
I will change to a mixed graphing method showing total membership versus employee/spouse/dependent. With the total membership as the line graph, and each membership type (employee, spouse, child) in a different colored bar grouped together in each month.
If the purpose is to show Eastern and Northern on the same graph and compare each group’s membership over the course of the year, then I will prefer using the line graph and having different colors representing Eastern and Northern.