GA Tracking Script

If we are using this plugin do we also need to add the GA Tracking Script in the header or does this plugin do all this? If we choose not to use this plugin then the script will do the same?

[ redundant link removed ]

<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-5555555555-1"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'UA-5555555555-1');
</script>

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