ICOTS-7 Proceedings: Editors’ Preface

Editors’ PrefaceAllan Rossman and Beth ChanceCalifornia Polytechnic State University, United Statesarossman@calpoly.edu, bchance@calpoly.edu

Editing these Proceedings has been a great privilege for us. We have been impressed with the quality andvariety of the papers and posters submitted for ICOTS-7. We have also been struck by the dedication,expertise, and professionalism of hundreds of volunteers who have contributed to this enterprise. Indeed, theprocess of assembling this volume has embodied the conference theme: working cooperatively in statistics education. We have enjoyed working with our fellow members of the International Program Committee, withthe conveners and organizers of the conference topics and sessions, with the authors of the papersthemselves, and with the referees who reviewed papers. These statistics educators represent more than 60countries from all parts of the world, and from a variety of academic backgrounds and interests. All haveworked together because of a shared commitment to improving the teaching and learning of statistics, botharound the world and in each one’s small corner of it. We hope that the roughly 400 papers and posterabstracts contained in these Proceedings will prove helpful toward achieving this goal, not only for thoseattending the conference but also for statistics teachers and education researchers who are unable to make itto Salvador.

Refereeing processAn optional refereeing process for ICOTS Proceedings was instituted with ICOTS-6, and we have continuedand expanded the process with ICOTS-7. The goals of this refereeing are to improve the quality of the papersand to provide recognition to those papers that satisfy the standard of peer review. A total of 139 paperswere submitted to this process and reviewed by three or four peers each, of which 78% were designated ashaving satisfied the peer-review process. These papers are identified as “refereed” in the header of the pdffile.

AcknowledgementsWe thank the 141 referees who graciously volunteered their time and expertise to this task. Most of themrefereed three papers, and several refereed more than that, often on very short notice. We also thank BrianPhillips, Editor of the Proceedings of ICOTS-6, for sharing helpful advice, and John Shanks, Web Master of ICOTS-7, for devising an automated system to manage the refereeing process and for invaluable support throughout this editing process. We also thank several people who helped with preparing the pdf files of thepapers: Emily Anderson, Donna Chance, Frank Chance, Jenna Maskell, Mary Mortlock, and Eileen Rossman.

ICOTS-7 Proceedings: Referees

Acknowledgement of ICOTS-7 RefereesDor Abrahamson ~ University of California, Berkeley, United StatesJim Albert ~ Bowling Green State University, United StatesArthur Bakker ~ University of London, United KingdomPatricia Balderas ~ Universidad Nacional Autónoma de México, MexicoGiovanni A. Barbieri ~ Istat (National Statistical Institute), ItalyLúcia Pereira Barroso ~ Instituto de Matemática e Estatística - Universidade de São Paulo, BrazilGabriella Belli ~ Virginia Tech, United StatesDani Ben-Zvi ~ University of Haifa, IsraelMaría Teresa Blaconá ~ Universidad Nacional de Rosario, ArgentinaAndrej Blejec ~ National Institute of Biology, SloveniaNancy J. Boynton ~ SUNY Fredonia, United StatesLea Bregar ~ University of Ljubljana, SloveniaNick Broers ~ Maastricht University, The NetherlandsFloyd Bullard ~ North Carolina School of Science and Mathematics, United StatesTim Burgess ~ Massey University, New ZealandRosemary Callingham ~ University of New England, AustraliaMatt Carlton ~ California Polytechnic State University, United StatesRodney Carr ~ Deakin University, AustraliaIrene Mauricio Cazorla ~ Universidade Estadual de Santa Cruz - UESC, BrazilMargarida César ~ Universidade de Lisboa, PortugalJean-Hugues Chauchat ~ Université Lumière Lyon2, FranceJulie M. Clark ~ Hollins University, United StatesPatti B. Collings ~ Brigham Young University, United StatesLinda Brant Collins ~ University of Chicago, United StatesDoreen Connor ~ Nottingham Trent University, United KingdomCileda de Queiroz e Silva Coutinho ~ Pontifícia Universidade Católica de São Paulo, Brazil Corrado Crocetta ~ University of Foggia, ItalyGeoff Cumming ~ La Trobe University, AustraliaBrenton Dansie ~ University of South Australia, AustraliaNeville Davies ~ Royal Statistical Society Centre for Statistical Education, United KingdomGretchen Davis ~ UCLA, United StatesRobert delMas ~ University of Minnesota, United StatesCarmen Díaz ~ University of Granada, Spain E. Jacquelin Dietz ~ Meredith College, United StatesJimmy A. Doi ~ California Polytechnic State University, United StatesMark A. Earley ~ Bowling Green State University, United StatesAndreas Eichler ~ Universität Bielefeld, GermanyNoel Enyedi ~ UCLA, United StatesAntonio Estepa-Castro ~ University of Jaén, SpainFiona Fidler ~ La Trobe University (Bundoora), AustraliaWilliam Finzer ~ KCP Technologies, United StatesPeter Flanagan-Hyde ~ Phoenix Country Day School, United StatesGlenda Francis ~ Swinburne University of Technology, AustraliaJ.S. Galpin ~ University of the Witwatersrand, South AfricaLinda Gattuso ~ Université du Québec à Montréal, CanadaRob Gould ~ UCLA, United StatesMary W. Gray ~ American University, United StatesMarcia Gumpertz ~ North Carolina State University, United StatesJames K. L. Hammerman ~ TERC, United StatesJohanna Hardin ~ Pomona College, United StatesWilliam Harkness ~ Penn State University, United StatesLisa L. Harlow ~ University of Rhode Island, United StatesWilliam V. Harper ~ Otterbein College, United StatesBrad Hartlaub ~ Kenyon College, United StatesRobert W. Hayden ~ statistics.com, United StatesMichel Henry ~ Université de Franche-Comté, FranceOscar Hernández ~ University of Costa Rica, Costa RicaSterling C. Hilton ~ Brigham Young University, United StatesLynn Hodge ~ University of Alabama, United StatesP.K. Ito ~ NaNew Zealandan University, JapanBrian Jersky ~ Sonoma State University, United StatesFlavia Jolliffe ~ University of Kent, United KingdomLi Jun ~ East China Normal University, ChinaGary Kader ~ Appalachian State University, United StatesSonia Kafoussi ~ University of the Aegean, Greece

ICOTS-7 Proceedings: Referees

Sibel Kazak ~ Washington University in St. Louis, United StatesJohn Kern II ~ Duquesne University, United StatesPetter Laake ~ University of Oslo, NorwayDavid Lane ~ Rice University, United StatesCynthia Langrall ~ Illinois State University, United StatesCarl Lee ~ Central Michigan University, United StatesLawrence Lesser ~ University of Texas at El Paso, United StatesKay Lipson ~ Swinburne University of Technology, AustraliaRobin Lock ~ St. Lawrence University, United StatesCynthia Long ~ Palmer Center for Chiropractic Research, United StatesMaría Virginia López ~ Universidad de Buenos Aires, Argentina Juan Manuel López-Zafra ~ Universidad Pontificia Comillas, SpainMaria Lúcia Lorenzetti Wodewotzki ~ State University of São Paulo, BrazilMarsha Lovett ~ Carnegie Mellon University, United StatesDione Lucchesi de Carvalho ~ Universidade Estadual de Campinas - FE/Unicamp, BrazilUlric Lund ~ California Polytechnic State University, United StatesHelen MacGillivray ~ Queensland University of Technology, AustraliaKatie Makar ~ University of Queensland, AustraliaPeter Martin ~ University of Ballarat, AustraliaJohn D. McKenzie Jr. ~ Babson College, United StatesMaria Meletiou-Mavrotheris ~ Cyprus College, CyprusOded Meyer ~ Carnegie Mellon University, United StatesJackie Miller ~ Ohio State University, United StatesCarlos Monteiro ~ Universidade Federal de Pernambuco, BrazilJerry Moreno ~ John Carroll University, United StatesCarolyn B. Morgan ~ Hampton University, United StatesPatrick Murphy ~ University College Dublin, IrelandJames Nicholson ~ University of Durham, United KingdomIrena Ograjen_ek ~ University of Ljubljana, SloveniaMario Miguel Ojeda ~ Universidad Veracruzana, Xalapa, Veracruz, MéxicoChris Olsen ~ Cedar Rapids (IA) Community Schools, United StatesDavid Ospina ~ National University of Colombia, ColumbiaRoxy Peck ~ California Polytechnic State University, United StatesPeter Petocz ~ Macquarie University, AustraliaMaxine Pfannkuch ~ University of Auckland, New ZealandLudovico Piccinato ~ Università di Roma, ItalyRobyn Pierce ~ University of Ballarat, AustraliaAnne Porter ~ University of Wollongong, NSW, AustraliaDave Pratt ~ University of Warwick, United KingdomNorean Radke Sharpe ~ Babson College, United StatesChris Reading ~ University of New England, AustraliaGina Reed ~ Gainesville State College, United StatesJean Claude Régnier ~ Université de Lyon, FranceAnna Reid ~ Macquarie University, AustraliaPaul Roback ~ St. Olaf College, United StatesJorge Luis Romeu ~ Syracuse University, United StatesDeborah Rumsey ~ Ohio State University, United StatesLuis Saldanha ~ Portland State University, United StatesErnesto Sánchez ~ Cinvestav, MéxicoAndrew Schaffner ~ California Polytechnic State University, United StatesMike Shaughnessy ~ Portland State University, United StatesPamela Shaw ~ Macquarie University, AustraliaTom Short ~ Indiana University of Pennsylvania, United StatesJulio M. Singer ~ Universidade de São Paulo, BrazilRobert Smidt ~ California Polytechnic State University, United StatesHeather Smith ~ California Polytechnic State University, United StatesEric Sowey ~ University of New South Wales, AustraliaTrevor Spedding ~ University of Wollongong, AustraliaDalene Stangl ~ Duke University, United StatesDouglas Stirling ~ Massey University, New ZealandEngin Sungur ~ University of Minnesota Morris, United StatesJosh Tabor ~ Glen A. Wilson High School, United StatesLiliana Tauber ~ Universidad Nacional del Litoral, ArgentinaDirk Templaar ~ University of Maastricht, The NetherlandsEne-Margit Tiit ~ University of Tartu, EstoniaJessica Utts ~ University of California – Davis, United StatesAngustias Vallecillos ~ Universidad de Granada, SpainNoël Veraverbeke ~ Universiteit Hasselt, BelgiumJohn Walker ~ California Polytechnic State University, United StatesRon Wasserstein ~ Washburn University, United StatesLarry Weldon ~ Simon Fraser University, Canada

ICOTS-7 Proceedings: Referees

Nathan Wetzel ~ University of Wisconsin – Stevens Point, United StatesJoe Wisenbaker ~ University of Georgia, United StatesJeff Witmer ~ Oberlin College, United StatesRoger Woodard ~ North Carolina State University, United StatesGabriel Yáñez ~ Universidad Industrial de Santander, Colombia