Why are my charts not updating when I make changes to my data?

1. Check if your data source is linked properly: It is important to make sure your data source is linked properly. Link the data source to the chart itself, not to the individual data points.
2. Check the data type: Make sure the data type is compatible. Chart data must be numeric in order to display properly.
3. Verify the data: Make sure the data being used is accurate, not corrupted, and not outdated.
4. Refresh the data: Refresh the chart or pivot table in order to update it with the latest data.