An IQ test score is calculated based on a norm group with an average score of 100 and a standard deviation of 15. The standard deviation is a measure of spread, in this case of IQ scores.A standard devation of 15 means 68% of the norm group has scored between 85 (100 â 15) and 115 (100 + 15).In other words, 68% of the norm group has a score within one standard deviation of the average (100).n IQ test score is calculated based on a norm group with an average score of 100 and a standard deviation of 15. The standard deviation is a measure of spread, in this case of IQ scores.
Report Abuse. David Man's (Dennis Weaver) car: 1971 Plymouth Valiant The Truck Driver (Cary Loftin): 1955 Peterbilt 281 Information: In the DVD documentary, Steven Spielberg observes that the fear of the unknown is perhaps the greatest fear of all and that Duel plays heavily to that fear.
Phantom vehicle may refer to a supposed ghostly or haunted vehicle, or, for insurance purposes, a vehicle that causes injury, death, or damage without making physical contact. Herbie Both Herbie and Horace (from the 1997 film) the Hate Bug are possessed cars. 2  Herbie, however is possessed by accident, when a photo of his creator Gustav Von Stumpfel's beloved Elsa fell in a vat of molten steel used for the car.