<p><strong>No.</strong> Reasons for editing are described <a href="https://stats.stackexchange.com/help/privileges/edit">in here</a>:</p>

<blockquote>
  <p><strong>When should I edit posts?</strong></p>
  
  <p>Any time you feel you can make the post better, and are inclined to do
  so. Editing is encouraged!</p>
  
  <p>Some common reasons to edit are:</p>
  
  <ul>
  <li>to fix grammatical or spelling mistakes</li>
  <li>to clarify the meaning of a post without changing it</li>
  <li>to correct minor mistakes or add addendums / updates as the post ages</li>
  <li>to add related resources or hyperlinks</li>
  </ul>
  
  <p><strong>Tiny, trivial edits are discouraged</strong> - try to make the post significantly better when you edit, correcting all problems that you
  observe.</p>
</blockquote>

<p>It's neither full, nor definite explanation, but it describes the general idea about editing: it is about <em>minor</em> improvements in <em>form</em>, not the <em>content, or meaning</em> of the question or answer that is edited. The description mentions correcting "mistakes", but in such cases it is usually better just to comment pointing the mistake and suggesting edit.</p>

<p>On another hand, there are cases where you could probably edit the question to correct the mistake (e.g. correct a minor arithmetic error in the calculation, if you're 100% sure and carefully checked your own calculation!), but in such cases you should always additionally <em>comment</em> the answer and describe what and why did you edit.</p>

<p>The only case where we are allowed to edit the content is <a href="https://meta.stackexchange.com/questions/11740/what-are-community-wiki-posts">community Wiki</a> threads, where anyone can make edits in answers, since they are maintained by the community, not the particular users:</p>

<blockquote>
  <p>Community Wiki posts work by partly transferring ownership of the post
  from the original author to the community. They make the post easier
  to edit and maintain by a wider group of users, but they do not
  contribute to any user's reputation.</p>
</blockquote>

<p>If you disagree with the answer, you can always downvote and/or comment it, it it is inappropriate for the site ($\ne$ incorrect), just flag it for moderator attention.</p>
