User talk:106.51.127.230

February 2019
Hello, I'm Materialscientist. I wanted to let you know that one or more of your recent contributions to Precision and recall have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help Desk. Materialscientist (talk) 10:23, 25 February 2019 (UTC)
 * If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.

Please refrain from making test edits in Wikipedia pages, even if you intend to fix them later. Your edits have been reverted. If you would like to experiment again, please use the sandbox. Thank you. Materialscientist (talk) 10:24, 25 February 2019 (UTC)

You have been blocked temporarily from editing for abuse of editing privileges. Once the block has expired, you are welcome to make useful contributions. If you think there are good reasons for being unblocked, please read the guide to appealing blocks, then add the following text below the block notice on your talk page:. Materialscientist (talk) 10:24, 25 February 2019 (UTC)