Close the Graph Data editor when you’re done.
If a column, bar, line or area graph references a table with a large number of data points, the graph automatically shows a representative sample of each series to improve the performance of Pages. Downsampling doesn’t change or remove the data in your table, and only changes the visible data points in the graph.
If your graph data is being downsampled, a message appears when you click Large Data Set in the Graph tab of the Format Change the look of bars, wedges and more in Pages on Mac