Page:Popular Science Monthly Volume 63.djvu/167

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163
THE AGE OF COLLEGE GRADUATION..

former is preferable to the latter as the measure in our present study. Inasmuch, however, as the arithmetical mean is the one in most common use, and further, as some may still feel that it, if investigated, would show the rise that has been supposed to exist, we will consider the data and results that Table III. shows. In this table are shown

Table III.

Average Age of Graduation for the Past Fifty Years.

1850-59 1860-69 1870-79 1880-89 1890-99 Cases.
Dartmouth 23-9.4 23-6.7 23-4.9 23-1.3 23-2.7 5362
Middlebury 23-8.1 23-6.5 23-5.8 23-6.5 23-8.1 1386
Bowdoin 22-6.4 22-11.7 23-0.0 23-1.6 23-2.4 2797
Vermont 22-11.5 23-3.3 22-8.6 23-3.4 23-0.2 1003
Adelbert 23-9.6 23-7.2 23-2.4 23-2.4 22-10.8 1048
U. of Ala. 21-0.0 20-1.8 20-2.4 20-3.6 20-6.0 949
N. Y. U. 21-1.6 21-2.3 20-8.4 21-7.5 21-10.8 860
Wesleyan 23-10.8 24-3.3 24-2.8 23-10.2 23-6.1 1933
Oberlin 25-0.7 24-7.5 24-5.3 24-8.7 24-3.9 1392
DePauw 22-2.4 23-8.4 23-8.4 23-9.1 23-10.3 1185
Syracuse 24-1.6 24-5.0 24-7.7 24-8.6 24-7.5 755
Av. of Totals 23-1.3 23-3.4 23-0.8 23-2.3 23-1.9

the arithmetical averages of each college by decades, supposing that the students graduating at any given year of age, say 32, are about equally distributed throughout the months of the year, thus giving an average for the given year of, say 22.5 years. With small numbers,

PSM V63 D167 Age difference of graduates within two generations.png

this assumption is not without its liability to error; but with numbers so large as we have, the errors are found by actual trial practically to negative each other; so that we can rely upon the results as being, for all practical purposes, and in the main, substantially correct.