The monthly data on ticket sales is shown below. What are the best and worst months for cruise sales? So what they've given us this diagram, this is usually called a pie chart or pie graph because it looks like a pie that's sliced up into a bunch of pieces. Sometimes this is called a circle graph, but pie graph is much more common. And then they say it's monthly ticket sales. So each of these slices represent the sales in a given month. So for example, this blue slice over here represents the sales in January.