Data Options Overview
overview      see also 

Use data options to focus the scope and handling of the data when creating a graph. You can:

§    Subset the data to focus your analysis. See Subset.

§    Include or exclude empty cells or groups in your analysis. See Group Options.

§    Use a frequency column when creating most graphs. See Frequency.

How you organize worksheet data can affect the ease with which you use these options. See Organizing Your Data.