-pr">#&gt;</span>  [9] ""       "Female" "Female" ""       ""       "Male"   ""       "Female"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [17] "Female" "Female" "Male"   ""       ""       ""       ""       "Female"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [25] "Female"</span>
<span class="r-in"><span><span class="va">oTree</span><span class="op">$</span><span class="va">survey</span><span class="op">$</span><span class="va">player.gender</span></span></span>
<span cla