Scatter plots are used to plot data points on a horizontal and a vertical axis in the attempt to show how much one variable is affected by another. Each row in the data table is represented by a marker whose position depends on its values in the columns set on the X and Y axes.
598 rounded to the nearest thousand is 1,000.
On a scale of thousands, when a number is 500 or greater, it rounds up to 1,000. When it is 499 or less, it rounds down to 0 because there is no thousand that comes before 1,000, and 1,000 - 1,000 = 0.