What is the term that is used to describe the inevitable biological aging that takes place in all members of the human species?

The statistic in which the differences from the mean are squared (to eliminate negative numbers) before they are added together and divided by their total number is called the

a. standard deviation. b. mean deviations. c. median. d. variance.

Kalika is told by her physician that her symptoms are caused by a loss of myelin. Her diagnosis would most likely be

A) Parkinson's disease. B) multiple sclerosis. C) early stage Alzheimer's disease. D) epilepsy.