Types of graphsThere are many types of graphs. Learning to read and create graphs is a very useful skill The end result is usually a better perspective that may not have been possible just by loking at a bunch of numbers. In this unit, you will learn about pictographs,bar graphs,double bar graphs,line graphs,and circle graphs. Let us start with pictographs: A graph is a visual way to display information. A pictograph is a graph that uses pictures or symbols to display information. The pictures in a pictograph usually represent more than one item. The following is a pictograph: The graph above has a title and a scale. Let say that the circles were drawn by David, Peter, John, Brown, and Jennifer. The title is "number of circles drawn" The scale used is the following: one circle represents 5 circles. David drew 15 circles since we have 3 circles and each circle represents 5 circles. John drew 7.5 circles. How did we get 7.5? Note that if a circle represents 5 circles, half a circle will represent 5/2 circles or 2.5 circles. Add 5 circles to 2.5, give 7.5 Exercise: Construct a pictograph with the following table: Here is the pictographs: 




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