> Where did the number 30 come from? Yeah, I've also heard 30 for normal distributions over and over in ~7 stats courses that I've taken. This SE stats answer

> Where did the number 30 come from? Yeah, I've also heard 30 for normal distributions over and over in ~7 stats courses that I've taken. This SE stats answer sounds reasonable enough: https://stats.stackexchange.com/a/2542 https://stats.stackexchange.com/a/2542