Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and wakingâ€”even if they are not exposed to the usual pattern of sunlight. To test this notion, eight paid volunteers were placed (individually) in a room in which there... Continue Reading →

# Understanding Mean, Median, and Standard Deviation

Chapter 2 For the following scores, find the:Mean: 2Median: 2SS: 56Variance: 2.67Standard Deviation: 1.67For the following scores, find the:Mean: 1312.40Median: 1361 SS: 76089.20Variance: 15217.84Standard Deviation: 123.36For the following scores, find the:Mean: 3.17Median: 3.25SS: .53Variance: .09SD: .30A psychologist interested in political behavior measured the square footage of the desks in the official office of four U.S.... Continue Reading →