However, there are things about Davis's hot start to the season that go a bit beyond the "small sample size" qualifier. Per FanGraphs, some offensive statistics don't take a full season -- or longer -- to become more reliable. Some of the relevant improvements for Davis -- swing percentage (50 PA) and contact rate (100 PA) -- can be explored now, though we haven't quite reached the point of examining strikeout rate (150 PA) or walk rate (200 PA) just yet (two areas in which Davis has shown tremendous improvement).
So let's take a look at Davis's progress in the plate discipline department from 2011 (when he joined the Orioles) to now.
(O-Swing% = percentage of pitches a batter swings at outside the zone; Swing% = total percentage of pitches a batter swings at; and Contact% = total percentage of contact made when swinging at all pitches.)
Those are terrifying numbers for opposing pitchers. Davis has always had immense power, but previously he chased too many pitches outside the strikezone while not making enough contact. Now, he's chasing fewer pitches, swinging less overall, but making more contact and doing a ton of damage when he makes contact.
His plate discipline probably won't continue to be this good, but there's no reason it won't still be better than last season. And improved pitch selectivity and knowledge of the strikezone should mean better walk and strikeout rates, which can be examined further along in the season.
I don't think even the most optimistic of Orioles fans thought Davis would be this good. But he's a much better hitter than he was in 2011, and it's a whole lot of fun to watch him hit right now.