A table is a set of numbers arranged in rows and columns. It is text, not graphics. The data in a table can be used to make charts and graphs. A graph show the relationship of two variables. It has a vertical axis, also called the "ordinate" or the "Y axis," and a horizontal axis, also called the "abscissa" or the "X axis." Pairs of X and Y values can be plotted on the graph. The points may be joined into a curve. Several curves may be plotted on the same graph. A pie chart shows the relative percentages or fractions of a set of numbers that add up to 100%.