100r 80 60 40 2 4 6. 8. 10 12 Age Percentage of Adult Size Brain 20 Percentage of Adult Age Size Brain 1 30% 2 50% 4 78% 88% 8 92% 10 95% 11 99%

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Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.