There are wrong answers because someone who thought they knew the answer to the question answered it. When you find a wrong answer, you can correct it. One way is to leave the answer and introduce your answer with "That answer is incorrect, the correct answer is...." or "Some people think that, but..." or something similar. You can also make changes within the incorrect answer itself, but I would not take the incorrect answer out completely unless it has illegal, harmful, etc. information in it.
People usually give the wrong answers because they get the wrong resources so make sure to look in different places and see if the answer is the same or not!
Anyone but new users can improve any answer, but this does make it difficult for random internet searchers to fix answers (They must sign up for an account, then answer an unanswered question to be allowed to improve answers, then go back and improve the answer). This process isn't straightforward and many people will give up before figuring out how to fix an incorrect answer.
Although most people that use this site are very good with their answers, you do get some people that answer questions incorrectly or place nonsense answers on here.
People from all over the world answer these questions. Every person has different levels of education and some people use English as a second language.
People who are thought to answer questions correctly and people who seem like very smart people on here.
71% of the questions were answered correctly
We at WikiAnswers do our very best to answer questions correctly and quickly. There are new questions submitted every second, so this is a never ending process.
Because some people on Answers.com are too lazy to take their time and spell correctly and even spell check their questions/answers.
Correctly.
Some do it because they think they know the answer. Some do it just to belittle other people without having to face them. Sometimes the person answering has simply misread the question. There are probably several other reasons. Hopefully your questions will be answered politely and correctly but there is no guarantee.
WikiAnswers are people who answer questions that are posed on this site, and some questions could be answered wrong, however, there are enough people who check these sites for accuracy, so if a question is answered wrongly, it will be corrected in due time, or will stay until someone who is knowledgeable will answer it correctly.
If you got four out of twenty questions wrong, you answered 16 out of 20 questions correctly. To find the percentage of questions answered correctly, you would divide 16 by 20 and then multiply by 100. This means you answered 80% of the questions correctly.
Anyone can answer questions on WikiAnswers. So some people who answer them are knowledgeable, and some are not.
Most questions are answered correctly. Some people may mistakenly give an incorrect answer. Some people deliberately give an incorrect answer. There is a team of dedicated people that try to give the correct answers and fix any answers that are wrong when they find them. There are millions of questions on the site, with more coming in every minute, so it is a huge task, but those volunteers do the best they can.