I want to explain why LJ Index scores are not well-behaved. That is, why they don’t conform to neat and tidy intervals the way HAPLR scores range from about 30 to 930. HAPLR scores fall into a predictable range because they are built on percentiles. Any given library’s score is a sum of 15 percentile [...]
Posts Tagged ‘distributions’
Ain’t Misbehavin’! Uneven LJ Index Score Ranges Are More Informative
Posted in Measurement, Research, tagged distributions, IMLS data, LJ Index, percentiles, public library ratings, skewed on April 11, 2009 | Leave a Comment »
Archives
- January 2012
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- October 2008
IMLS- Blog Post: You just never know who’s going to drop by the IMLS booth in the exhibit hall! February 10, 2012
- IMLS to Hold Briefing on FY13 Budget Request February 8, 2012
- State Library Agencies Continue to Provide Valuable Services Despite Severe Cuts in Funding and Staff February 6, 2012
- Blog Post: IMLS on YouTube: National Aquarium Teaches with Watershed Moments February 3, 2012
- Application Deadline Extended: National Arts and Humanities Youth Program Awards February 1, 2012
- February 2012: Tubman African American Museum Takes Exhibits Beyond Museum Walls February 1, 2012