User talk:Goodguyboy

September 2018
Please refrain from making unconstructive edits to Wikipedia, as you did at Validity (statistics). Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Sjö (talk) 15:37, 21 September 2018 (UTC)