Data interpretation using a stacked column chart becomes difficult when you want to compare the constituent parts of each entity across the various entities. Try comparing the 2nd Quarter sales across the regions from the above chart!In the Javascript chart above, the parts (quarters) in the individual entities (regions) do not share a common base. You can compare the sales of North across the regions (as it has the same baseline), but it is cumbersome to do the same for the other regions.To facilitate such an analysis, we can use the grouped column chart.When several column charts are combined side-by-side to form individual groups, they are called grouped column charts.
In the grouped column chart, all the columns have the same baseline, and thus it is much easier to compare the heights of the individual columns.Furthermore, to make the analysis easy, bring those columns closer to aid comparison.In this chart, we have brought the quarterly sales of each region closer to form four groups―North, South, East, and West. You can easily compare the sales of North across the four quarters from this chart.