title: Heteroscedasticity Test for Random Effects Model
body: <p>everyone</p>
  
  <p>I'm running a random effects model using the <code>plm</code> package and now I need to test for the presence of heteroscedasticity, but I'm not sure how to process it in the mentioned package. </p>
  
  <p>My model:</p>
  
  <pre><code>random &lt;- plm(Y ~ X, data=panel_data, model= "random", effect = "twoways")
  </code></pre>
  
  <p>Thank you in advance!</p>