<p><pre><code> Looking at repeat donations prompted us to ask: do people donate more or less
their second time? On average, the answer is roughly 50% more. While first
donations had a mean of $88 and a median of *$30*, repeat donations had a mean
of $114 and a median of *$50*.
Average doesn’t mean typical, however. If you look at each repeat donor one by one,
it turns out they’re split almost exactly into thirds: 33% donate less the second time
(most commonly half), 35% donate more (most commonly double), and 32% donate
exactly the same. The averages get pushed up because doubling (and the
occasional tripling or even quadrupling) makes a bigger difference overall
than halving does.
</code></pre>
that's odd. wouldn't you expect the median to stay about the same if 1/3 donated less, 1/3 donated the same, and 1/3 donated more?