User:C.Hua Wang/Bias (statistics)/Joannetsai Peer Review

General info

 * Whose work are you reviewing?

C.Hua Wang


 * Link to draft you're reviewing
 * https://en.wikipedia.org/wiki/User:C.Hua%20Wang/Bias_(statistics)?veaction=edit&preload=Template%3ADashboard.wikiedu.org_draft_template


 * Link to the current version of the article (if it exists)
 * Bias (statistics)

Evaluate the drafted changes

 * 1) It would be helpful to elaborate more about the topic in the first paragraph. Though bias is a basic knowledge in probability, but it's not that prevalent for layman or people who are not familiar with probability. Therefore, I think it would be great to explain more about the topic in the first paragraph. For example, bias is mathematically described in the leading paragraph, but it could be described more clearly: What is T? What is unbiased estimator? Why unbiased estimator is mentioned here?
 * 2) The "Types" section could be more organized. This section is a little bit messy, some of the type is elaborated well, but some of them are relatively brief. This part would be more concise if this issue is solved.
 * 3) The "Types" section states that some types of biases may overlap, but nothing is explained in the following content. I think readers would be confused which parts are overlap. It would be helpful to add some annotations that can help readers understand the overlap parts here.
 * 4) It seems like this article needs additional citations. https://elifesciences.org/articles/27879 is an article that might be useful. This discuss the effects to our statistics that might be caused by bias. I think this is an interesting and important story to tell regarding bias. https://link.springer.com/article/10.1007/s11999-010-1538-7 is a good material of example of bias. It develops the methods and logics used in clinical studies to assess bias. This could be a great example to elaborate in detail, and it would effectively make readers understand this abstract concept.