I am running a down and dirty statistics on the shape length field as a sanity check for some analysis. I want to compare total length of original data to total length of the results of an overlay layer. So I have the same records selected that I used in the overlay, but when I examine the statistics, even though I clearly have a subset of records selected, as you can see in my screenshot, the statistics listed in the chart properties tab are identical for the dataset and the selection. It appears the selection isn't being honored when generating the statistics. Is this a bug, or am I missing something here?