title: What should be the threshold for modified z score?
body: <p>I am trying to find out outliers in my data set. I was previously using z score to calculate that.I was using a 99% confidence interval which is like +/- 2.576 on z score table. However i realized that calculating zscore using median absolute deviation would be better. I have the modified z score based on </p>
  
  <pre><code>0.0645*(x- median)/MAD
  </code></pre>
  
  <p>My problem is i am not sure whats a good cutoff in case of modified z score or is it based on kind of data i have?</p>