Scatter charts show multiple points with (x, y) coordinates on a cartesian plot area. Points may be represented with different symbols (like circle, triangle, cross etc) or external images, called markers.
Our US Sales demo charts show a point at the intersection of each year value between 2000 and 2017 and the number of products sold in US in that year. The horizontal X baseline appears here as a category axis, with regular intervals for each year value. Scatter charts use also often a linear baseline, with X values distributed at random intervals.