Bar graphs are convenient for showing comparisons among items.The bars may be either horizontal or vertical,and they are used to show the amounts of different items.Figure 1 is an example of a typical bar graph.The...Bar graphs are convenient for showing comparisons among items.The bars may be either horizontal or vertical,and they are used to show the amounts of different items.Figure 1 is an example of a typical bar graph.The graph shows the average sales price of existing homes in the Northeast United States for three years——1970,1980,and 1997.展开更多
文摘Bar graphs are convenient for showing comparisons among items.The bars may be either horizontal or vertical,and they are used to show the amounts of different items.Figure 1 is an example of a typical bar graph.The graph shows the average sales price of existing homes in the Northeast United States for three years——1970,1980,and 1997.