The Square Root of Man (1968) - a collection of stories by Philip Klass, who wrote SF as "William Tenn."

Alexander the Bait
The Last Bounce
She Only Goes Out at Night
My Mother Was a Witch
The Jester
Confusion Cargo
Venus is a Man's World
Consulate
The Lemon-Green Spaghetti-Loud Dynamite-Dribble Day - (original title= "Did Your Coffee Taste Funny This Morning?")

This collection spans Tenn's entire range: the first story in the book is the first he wrote for Astounding in 1946, and the last story appeared in Cavalier in 1967. Other sources include: Fantastic Adventures, Fantastic Universe, PS, Thirilling Wonder Stories (2), Planet Stories, Galaxy.