Approximately how many students will typically get scores within one standard deviation of the mean (either above or below the mean) on a standardized achievement test?
A) About two-thirds of them
B) About one-third of them
C) About 20 of them
D) About half of them
Question 2
Which one of the following statements best describes how a standard score is derived?
A) By identifying the grade level to which the student's test performance is most similar
B) By counting the total number of points the student has earned on all test items
C) By determining how far from average the student's raw score is in terms of standard deviation units
D) By finding out how many students at the same age or grade level obtained lower scores
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. In which distribution is the mean more “typical” of all scores?
Students working around a computer