Recommendation letters for professors. Applicants for an academic position (e.g., assistant professor) at a college or university are usually required to submit at least three letters of recommendation. A study of 14c8 applicants for an entry-level position in experimental psychology at the University of Alaska at Anchorage revealed that many did not meet the three-letter requirement. (American Psychologist, July 1995.) Summary statistics for the number of recommendation letters in each application are as follows:
Mean = 2.28 Median = 3 Mode = 3 Interpret these summary measures.
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