User talk:Omar1323

February 2022
Hello, I'm Sea Cow. I noticed that you made a change to an article, Selection bias, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Sea Cow (talk) 00:20, 5 February 2022 (UTC)