Bar charts across categories

- [Instructor] When it comes to comparing categorical data,…it's really hard to beat the bar chart.…Although it's a very simple chart and often used,…it's one of the best ways of visualizing data.…A bar chart encodes the value in the length of bar…across an axis.…So, for that, we're going to use our Sales.…Here we have an axis and the length of bar…denotes the amount of sales in our data set.…In this example,…it's about 2.3 million dollars.…Next, we want to subdivide this bar…into our separate regions.…

So, we add the Regions to the y axis.…Now, we have a header showing the name of the Region…and four bars.…Each one denotes in the amount of sales for each category.…We can now compare the sales across all of our Regions.…We can easily see that the West…is the biggest selling region.…This is just looking at four of our regions.…What about if we have a larger number?…For example,…let's look at Sub-Category instead of Region.…So, replace that…and now we can see all of the Sub-Categories that we sell.…

We can see which ones were making the largest…