I am working with a rather large data set (aprox 50k data points per day), where each row is a record that has a VOLUME and a GROUP identified within each record.  Approximately 10 groups in total, and the dataset is 90 days of info.

I am needing to display (preferable in a line graph where each date is the x-axis) what the daily average sum of VOLUME is for each GROUP.

Any help is much appreciated!