Ever notice how average to attractive females will ALWAYS avoid hanging out in groups with no good looking guys?

Do you notice how Whenever a group of friends in school or uni or the workplace organises an outing to the cinema or restaurant or club, and everyone is invited, the average to attractive females will always find some reason not to join in if there are no good looking guys guys joining in? they will always ask who is going, and if none of the good looking guys are going, they will opt out while everyone else will still go. you can still frequently see good looking guys hanging out in a group whether there are no good looking girls, but never a good looking girl in a group with no good looking guys.