While reviewing scores from a test on contralateral hemispheric lateralization, a teacher discovered that the mean score was higher than the median. Which of the following statements is most likely correct? (A) The range of the set of scores is the difference between the mean and the median. (B) The standard deviation is equal to the mean. (C) The distribution of scores for the test is normal. (D) The distribution of scores for the test is positively skewed