| Examination Profiler How can one generate a "C" standard normal distribution
      of grades? First, one can take the raw scores from an exam and
      calculate the mean, median, mode, standard deviation, and coefficient
      of variation. The quick check for a normal distribution is to
      see whether the mean, median, and mode are approximately equal
      to each other. If this is the case, one then can move up and
      down the mean by one standard deviation to generate the C+, C,
      and C- raw score grades and assign their numerical equivalents
      on a 4-point scale. At the second standard deviation level one
      has the "B" and "D" range, and at the third
      standard deviation, one has the "A" and "F"
      range. A downloadable spreadsheet
      module provides a numerical illustration, complete with an
      automatic examination histogram generator.   |