><span class="p">(</span>
    <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">np</span><span class="o">.</span><span class="n">std</span><span class="p">(</span><span class="n">x</span><span class="p">),</span> <span class="n">axis</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>

<span class="n">data</span><span class="o">.</span><span class="n">drop</span><span class="p">(</span><span class="n">old_PAY_AMT</span> <span class="o"