A legend box in an Excel chart lists the chart's data series. It specifies each series' name and the color of its marker on the chart. When you try to edit a legend using the Format Legend dialog box, ...

An Excel chart's legend identifies its data series markers. For example, if a chart compares several products' sales, colored lines track each product. The legend contains colored lines as well, and ...

A chart is a graphical representation of data that helps your audience to understand your information easily; charts make comparisons in your data and analyze the trends or patterns in data sets.