title: Can someone help me with this formula ? (Standard deviation)
body: <p>So I just started to learn Java, but my prof. just gave us this wild formula which we have to translate into code. I can't figure it out how to make this possible, can someone help me ? </p>
  
  <p>σ means Standard deviation
  µ means average
  x means The Array x
  N means N variables</p>
  
  <p><img src="https://i.stack.imgur.com/WXHXg.png" alt="Formula">]</p>