1) With respect to statistics 
• (adv.) In the way of statistics.
Sta·tis'tic·al·ly adverb In the way of statistics. 
[adv] - with respect to statistics
statistical, statistically Related word families intertwined with 'to place, placing, to put; to add; to stay; to attach' word units: fix-; pon-; prosth-; the-, thes-.
adverb with respect to statistics; `this is statistically impossible`