User:J47211/Bhatia–Davis inequality/Yungam99 Peer Review

General info

 * Whose work are you reviewing?

Reviewing the work of J47211


 * Link to draft you're reviewing
 * Here is the link to the J47211's sandbox


 * Link to the current version of the article (if it exists)
 * Here is the link to the current version of the article. (Bhatia–Davis inequality)

Evaluate the drafted changes
The short statement reveals the definition of the topic, but it is insufficient to understand. The examples or graphs would help to figure out. For enhancing understanding, it would be better to mention why the bound on the variance is discussed in the introduction section.Plus,it especially seems important what the comparison to other quantities is, but it has remained vague.