A program evaluator for a large school district wants to know how much intelligence varies in the elementary schools. She selects one classroom at each grade level in each elementary school and administers an intelligence test to the children in those classrooms. In order to find out which school has the most consistent intelligence level, which of the following should she calculate for each school? A) The mean
B) The standard deviation
C) The sum of the deviations
D) The range

Marian recently made the decision to try to re-wallpaper her own kitchen—which was a mistake given her personality! to compound the mistake, she selected a complex wallpaper pattern that included flowers and trees. each time she put one strip of paper on the wall, she became increasingly upset if there was not a perfect match from the pattern of one strip to the next. if one flower was off by as much as one-tenth of an inch, she would tear down the strip, remove the excess paste, and try again with the next strip. over eight hours after she started this job, she has only succeeded at putting up six strips of wallpaper, which covered about 10 percent of the room in which she was working. marian may suffer from personality disorder.