After a chart has been inserted and formatted, is it possible to change the data range it refers to or to add new rows of data? No, additional data cannot be included in a chart once it has been created; the user should delete the chart and create a new chart.
Yes, click the Select Data button in the Data group under the Design tab to extend or reduce the data range.
Yes, click the chart, select the additional rows or columns of data to add, and press Enter on the keyboard.
Yes, double-click the chart and select Properties from the list; in the Properties box, insert the new data range to include in the chart.

Yes, click the Select Data button in the Data group under the Design tab to extend or reduce the data range.

Explanation:

Excel allows one to be able to update the data in a graph because the designers knew that information needs to be updated sometimes.

This is why there is an option to use the Data button in the Data group which is under the Design tab to increase or decrease the data range that is to be used in the chart which means that a new row of data could even be added.

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