when is the beta distribution bell-shaped or concave? when is a beta distribution bell-shaped or concave? when is beta distribution bell shaped or concave when is beta distribution bell shaped when is beta distribution bell-shaped when is beta distribution bell shaped when beta distribution is bell shaped or concave what type of distribution is blue, purple, green when is a beta distribution bell shaped or concave when is beta distribution bell shaped when is beta distribution concave beta distribution concave when is beta distribution convex? when is beta curve bell-shaped or concave when is beta distribution bell shaped or concave? when is beta distribution bell shaped or concave when is beta distribution bell-shaped when is beta distribution bell shaped or concave when is beta distribution bell shaped or concave? when is beta distribution bell-shaped or concave?