70 · ARL Statistics 2009–2010
Analysis of Selected Variables of University Libraries, 2009–2010
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
If the mean is larger than the median, then the distribution is positively skewed, and if the opposite is true, the
distribution
identical.arefiguresmediantheandmeanthewhennormalisdistributionathatNotelibraries.universityARL
skewed.negativelyis
Analysis of Selected Variables of University Libraries, 2009–2010
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
If the mean is larger than the median, then the distribution is positively skewed, and if the opposite is true, the
distribution
identical.arefiguresmediantheandmeanthewhennormalisdistributionathatNotelibraries.universityARL
skewed.negativelyis