</span> <span class="va">preprocessed_data</span><span class="op">$</span><span class="va">data</span></span></span>
<span class="r-err co"><span class="r-pr">#&gt;</span> <span class="error">Error in eval(expr, envir, enclos):</span> object 'preprocessed_data' not found</span>
<span class="r-in"><span><span class="va">split_data</span> <span class="op">&lt;-</span></span></span>
<span class="r-in"><span>  <span class="fu"><a href="train_test_balance.html">train_test_balance</a></span><span class="op">(<