[Solved] Not-for-profit corporations have members instead of shareholders and none of their surplus revenue may be distributed to their members. Variability: The extent to which data points in a statistical distribution or dataset differ from each other and from the average or mean. Alfred Kinsey: An American biologist and sexologist, one of the pioneers in researching human sexuality in the mid-20th century, noted for his Kinsey Reports. Sexual Activity: Behaviors that involve sexual intimacy or erotic stimulation between individuals. Human Sexual Behavior: Refers to the ways in which humans experience and express their sexuality, encompassing a wide range of activities and expressions.