Click Label Options if it's not selected, and then under Label Contains, select the check box for the label entries that you want to add. The label options that are available depend on the chart type of your chart.

If your chart contains chart titles (ie. the name of the chart) or axis titles (the titles shown on the x, y or z axis of a chart) and data labels (which provide further detail on a particular data point on the chart), …

Change the text and format of category axis labels and the number format of value axis labels in your chart (graph).

Right-click the selection > Chart Elements > Data Labels arrow, and select the placement option you want. Different options are available for different chart types. For example, you can place data labels …

To change the label, you can change the text in the source data. If you don't want to change the text of the source data, you can create label text just for the chart you're working on.

To make a chart easier to understand, you can add chart titles and axis titles, to any type of chart in Excel, Outlook, PowerPoint, or Word.

You cannot have a date axis if the dates in your chart appear in the legend. You may want to change the way that data is plotted in the chart so that the dates appear on the category axis instead.

When you create a chart, tick marks and labels are displayed by default on axes. You can adjust the way that they are displayed by using major and minor tick marks and labels.

Learn how to add a legend to a chart, retrieve a missing legend, and adjust its settings. Add, edit, or remove a chart legend in Excel.

Learn how to create a chart in Excel and add a trendline. Visualize your data with a column, bar, pie, line, or scatter chart (or graph) in Office.