The math of the average response is just insane

gays and lesbians (estimate: 30%, true: 3%),
bisexuals (estimate: 29%, true: 4%), and
Transgender (estimate: 21%, true: 0.6%). 

Leaving 20% for cishetero and everyone else.

Native Americans (estimate: 27%, true: 1%),
Asian Americans (estimate: 29%, true: 6%), and
Black Americans (estimate: 41%, true: 12%).

Leaving 3% for whites and everyone else.