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THE CLAREMONT COLLEGES LIBRARY

THE CLAREMONT COLLEGES LIBRARY. The Claremont Colleges Library. Beyond the Books: Using Statistical Analysis to Evaluate & R evise An Approval P lan P rofile. JoHn McDonald ALCTS AS Research & Statistics PROGRAM New Orleans, Louisiana June 25, 2011. The Claremont Colleges Library.

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THE CLAREMONT COLLEGES LIBRARY

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  1. THE CLAREMONT COLLEGES LIBRARY

  2. The Claremont Colleges Library Beyond the Books: Using Statistical Analysis to Evaluate & Revise An Approval Plan Profile JoHn McDonald ALCTS AS Research & Statistics PROGRAM New Orleans, Louisiana June 25, 2011

  3. The Claremont Colleges Library Too many books about cats coming on approval? June 25, 2011 CC BY-NC-ND 2.0: http://www.flickr.com/photos/axis/280925758/

  4. The Claremont Colleges Library Time to revise the plan… June 25, 2011

  5. The Claremont Colleges Library This profile-ese looks like Greek to me June 25, 2011

  6. The Claremont Colleges Library It probably won’t end well… June 25, 2011

  7. The Claremont Colleges Library There has got to be a better way June 25, 2011

  8. The Claremont Colleges Library • What was wrong at Claremont • (assumptions, right or wrong) • No attention to plan, in some areas • Plan not addressing our needs • Not enough auto-shipped books • Too many slips • Slips don’t match orders • Orders coming from outside the plan June 25, 2011

  9. The Claremont Colleges Library • Why does it matter? • Plan should take care of ‘easy’ buys • Plan should provide targeted notifications • Plan should limit out the ‘easy’ non-buys • Librarians should spend time on ‘tougher’ decisions June 25, 2011

  10. The Claremont Colleges Library Could data show us the answer? June 25, 2011

  11. The Claremont Colleges Library Dig up some data • Downloaded records from GOBI • Over 50,000 books profiled by YBP in 2006 • Merged with our catalog data on purchase patterns • Included circulation statistics • Deduped print/cloth, excluded eBooks • Coded each book with Autoship/Slip/Exclude status • Coded each book with Purchase Status for Claremont June 25, 2011

  12. The Claremont Colleges Library Books Published in 2006, in GOBI Actual Outcomes June 25, 2011

  13. The Claremont Colleges Library Books Published in 2006, in GOBI Best Case Outcomes June 25, 2011

  14. Analysis of Variance, Predicting Purchase The Claremont Colleges Library

  15. The Claremont Colleges Library Best model of purchase patterns included just a few variables and explained 10% of variance: Country of Publication Slip Sent+YBP Select (interaction effect) Slip Sent+Discipline (interaction effect) YBP Select+Discipline (interaction effect) YBP Select+Country (interaction effect) Content Level+Discipline (interaction) Content Level+Country (interaction) *simpler model included just 3 variables June 25, 2011

  16. The Claremont Colleges Library Best model of usage patterns included just a few variables and explained 6% of variance: Discipline Slip Sent+Discipline YBP Select+Discipline YBP Select+Content Level Interesting to note: Slip Sent+Discipline and YBP Select+Discipline were both predictors for purchase and usage. June 25, 2011

  17. The Claremont Colleges Library • A few easy changes can really improve the plan • Adjust Non-subject parameters • Limit Country of Origin • Include YBP Select • Analyze LC Class and Disciplines • Move Slips to Autoship when appropriate • Eliminate Slips when not likely to result in purchase or usage June 25, 2011

  18. The Claremont Colleges Library “Likelihood of purchase” chart June 25, 2011

  19. Translate to Profile format, part 1… The Claremont Colleges Library June 25, 2011

  20. Translate to Profile format, part 2… The Claremont Colleges Library June 25, 2011

  21. The Good… The Claremont Colleges Library June 25, 2011

  22. The Not so Bad… The Claremont Colleges Library June 25, 2011

  23. The Not so Bad… The Claremont Colleges Library June 25, 2011

  24. The Not so Bad… The Claremont Colleges Library June 25, 2011

  25. The Problem… The Claremont Colleges Library June 25, 2011

  26. What went wrong The Claremont Colleges Library June 25, 2011

  27. The Claremont Colleges Library Ask why on the “Likelihood of purchase” chart June 25, 2011

  28. Essentials were essential… The Claremont Colleges Library June 25, 2011

  29. The Claremont Colleges Library • Tune Up needed • Receive all “ESSENTIAL” Books, except in very obvious areas where we have no collecting history • Loosen up book/slip designations on targeted LC sub-classes • Look at non-subject parameters that may be (unintentionally) trumping LC content • Have librarians work with faculty on additional areas to include June 25, 2011

  30. The Claremont Colleges Library Books Published in 2010, in GOBI Tuned Up Revised Plan Outcomes

  31. The Claremont Colleges Library Books Published in 2006, in GOBI Best Case Outcomes June 25, 2011

  32. The Claremont Colleges Library • Lessons learned • Publishing output fluctuates by year • Analyze more than a year of data at a time • Especially at the more granular LC subclass levels • Profiling is an art • Use logic as much as data • Details are essential • Listen to your vendor • No need to be risk averse June 25, 2011

  33. The Claremont Colleges Library http://www.zazzle.com/statistics_means_never_having_to_say_youre_certai_tshirt-235669028746970031 June 25, 2011

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