hi, i'm new to Python and im trying to learn Data analysis using python and im having trouble with this code : <p>This code is not showing the correct mean values.    </p>

<pre><code>from pandas import*
import numpy
m={'ground forces':Series(['30','45','51','66','38'],index=['a','b','c','d','e']),'naval forces':Series(['76','100','91','178','81'],index=['a','b','c','d','e']),'air forces':Series(['212','28','92','77','55'],index=['a','b','c','d','e'])}
k=DataFrame(m)
print(k)
print(k.apply(numpy.mean))
</code></pre>
