User talk:73.223.111.77

September 2021
Hello, I'm DavidBrooks. I wanted to let you know that one or more of your recent contributions&#32;to Average absolute deviation 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 Teahouse. Thanks. David Brooks (talk) 00:44, 1 September 2021 (UTC)