what is pictograph
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Visualpresentationofdatausingicons, pictures,symbols, etc., in place of or inadditiontocommongraphelements(bars,lines,points). Pictographs use relative sizes or repetitions of the same icon, picture, or symbol to show comparison. Alsocalledpictogram, pictorialchart, pictorial graph, or picture graph.
Ingraph theory, a pictograph is a graph that shows numerical information by using picture symbols oricons to represent data sets. The advantage of using a pictograph is that it is easy to read.