If you chose "Scores only" or "Standard output," then we create two printouts of scores: one alphabetized by last name and another sorted by identification number. The percentage correct, percentile rank, T-scores, mean, and standard deviation are also printed on the lists of scores.
A T-score is a standardized score that allows you to compare test scores for tests with different scales and for different classes. A T-score assumes that the test mean is 50 and the standard deviation is 10. The T-score provides an index of the distance a particular score lies from the average.
Choosing standard output means you will also receive a frequency distribution table. The frequency distribution gives you a table showing the frequency distribution of the test scores.
Each score is given a percentile rank that indicates the percentage of students who fall below this point on the score distribution. In cases where more than one student or where no student obtains a particular score, the distance between scores is taken into account.
The standard output report also includes a histogram, a graphical representation of a frequency distribution. The weighted scores are along the x-axis and the frequency is shown on the y-axis (how many students received each score on the test).
In some cases student scores will approximate the shape of a normal distribution, or a bell curve. For a variety of reasons (including small class size) this doesn't always happen. A histogram, therefore, is more likely—but not guaranteed—to be bell shaped for classes in which there are 30 or more students.