<p>It's possible to extract the <em>number</em> of bounties awarded (regardless of reputation transferred) with <a href="http://data.stackexchange.com/stats/query/210451/questions-with-accepted-and-bountied-answers?topX=10" rel="nofollow noreferrer">this query</a>. The top 10 questions by number of bounties + 1 for an accepted answer are:</p>

<p><a href="https://stats.stackexchange.com/questions/80380">Examples where method of moments can beat maximum likelihood in small samples?</a><br>
<a href="https://stats.stackexchange.com/questions/12140">Conditional inference trees vs traditional decision trees</a><br>
<a href="https://stats.stackexchange.com/questions/65276">Negative binomial regression question - is it a poor model?</a><br>
<a href="https://stats.stackexchange.com/questions/72685">Why is Mantel&#39;s test preferred over Moran&#39;s I?</a><br>
<a href="https://stats.stackexchange.com/questions/93099">Root finding for stochastic function</a><br>
<a href="https://stats.stackexchange.com/questions/35414">Mixed model vs. Pooling Standard Errors for Multi-site Studies - Why is a Mixed Model So Much More Efficient?</a><br>
<a href="https://stats.stackexchange.com/questions/71221">Selecting PCA components which separate groups</a><br>
<a href="https://stats.stackexchange.com/questions/82078">Why the F-test in Gaussian linear models is most powerful?</a><br>
<a href="https://stats.stackexchange.com/questions/3064">Longitudinal comparison of two distributions</a><br>
<a href="https://stats.stackexchange.com/questions/7607">Boundary effect in a wavelet multi resolution analysis</a>  </p>

<p>In some cases the bounty expired without being awarded because there were no answers given before the bounty expired. </p>

<p>Enjoy!</p>
