The ___ is a measure of how spread out points are from the mean A) arithmetic mean B) geometric mean C) standard deviation D) variance Related MCQs: The current through a conductor between two points is directly proportional to the voltage across the two points, is known as? ……. describes the events to which we measure what we purpose to measure? ……. Validity is the extent to which a tool appears to measure what it is supposed to measure? A type of criterion validity whereby a new measure correlates with a criterion measure taken at the same time is considered.