60
ANALYSIS
OF
SELECTED VARIABLES
OF
ARL UNIVERSITY LIBRARIES, 2004-05
The percentages and ratios below are select indicators that describe the condition of ARL university
libraries. The high and low figures indicate the range, while the mean and median indicate the central
tendency of the distributions for ARL university libraries. Note that a distribution is normal when the
mean and the median figures are identical. If the mean is larger than the median then the distribution is
positively skewed, and if the opposite is true the distribution is negatively skewed.
Category High Mean Median Low
Number
of libraries
reporting
1. Professional Staff as percent of Total Staff 55.90 31.38 29.56 19.77 113
2. Support Staff as percent of Total Staff 71.57 47.31 47.42 15.00 113
3. Student Assistant Staff as percent of Total Staff 55.00 21.31 21.72 0.51 113
4. Ratio of Professional to Support Staff (excluding Student
Assistant Staff)
3.10 0.74 0.64 0.32 113
5. Ratio of Items Loaned to Items Borrowed 5.54 1.53 1.39 0.31 111
6. Serial Expenditures as percent of
Total Library Materials Expenditures
90.11 67.35 68.65 25.30 112
7. Monograph Expenditures as percent of Total Library
Materials Expenditures
47.55 22.52 21.05 5.87 112
8. Total Library Materials Expenditures
as percent of Total Library Expenditures
60.68 42.12 42.78 25.85 113
9. Contract Binding
as percent of Total Library Expenditures
1.94 0.76 0.70 0.22 112
10. Salary and Wages Expenditures
as percent of Total Library Expenditures
60.21 44.95 44.72 30.20 112
11. Other Operating Expenditures
as percent of Total Library Expenditures
41.44 12.19 11.48 2.95 112
12. Unit cost of monographs (per volume) 136.25 56.81 55.64 24.17 100
13. Unit cost of serials (per subscription) 656.31 247.55 231.90 93.72 88
14. Library Expenditures per Faculty 48,195.75 16,941.82 14,660.38 7,227.49 112
15. Library Expenditures per Full-Time Student 6,172.77 1,242.62 910.33 460.87 111
16. Library Expenditures per Full-Time Graduate Student 18,361.53 5,311.16 4,816.34 2,006.16 112
17. Library Expenditures per Full-Time User 5,340.79 1,144.09 860.77 440.82 111
18. Library Expenditures per User (includes part-time) 5,253.10 981.82 692.90 361.85 111
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