Constructing+and+interpreting+bar+and+column+graphs

Simple line graphs use a line to join the values plotted on a graph. The points on the graph correspond to values on the horizontal and vertical axes. To determine the value of a particular point simply project a line to the appropriate axis and read off the value. Multiple line graphs have more than one line on the same set of axes. Each line on the graph can be interpreted independently or compared with other lines on the graph. Compound line graphs are used to show the component parts that contribute to a total. The top line of the graph represents the total value of the components drawn on the graph. Each line below represents the total represents a component of the total. The size of each component is shown by the difference between each two lines. Divergent line graphs are used to interpret variations from a base or average line, which is usually shown as zero. When using this type of graph ensure that you check the vertical scale carefully. Simple bar graphs use horizontal bars to make comparisons. Simple column graphs use vertical bars to make comparisons. Comparative bar and column graphs group features for comparisons Compound bar and column graphs not only compare features nut also show the percentage breakdown or numerical value of these categories that make up the feature.
 * __ Line Graphs __**
 * __ Bar and column graphs __**