std dev across multiple levels not calculated correctly

[mogwai316]

Not that big of a deal, but when you have multiple levels shown in a report, the overall std dev appears to just be taking an average of the individual std dev's from each level. It doesn't take into account the number of hands played at each level. For example:

http://i547.photobucket.com/albums/hh449/mogwai316/hem_stddev_bug.jpg

[Patvs]

Instead of std dev BB, can you just put in bb/100 in the reports tab.
That one should show the correct overall winrate.

[mogwai316]

Instead of std dev BB, can you just put in bb/100 in the reports tab.
That one should show the correct overall winrate.

Winrate is fine.. the std dev is what is not computed correctly. The 34.10 is way off - there's no way 13 hands at 1/2 could outweight 108571 hands at .50/1. It is just averaging the 29.40 and 38.81 instead of actually calculating the overall std dev.