Mixed results from a multiple regression analysis of supplemental instruction courses in introductory physics

• Eric Burkholder ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing

  * E-mail: eburkhol@stanford.edu

  Affiliation Department of Physics, Stanford University, Stanford, California, United States of America

  https://orcid.org/0000-0001-7420-4290

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• Shima Salehi,

  Roles Formal analysis, Writing – review & editing

  Affiliation Graduate School of Education, Stanford University, Stanford, California, United States of America

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• Carl E. Wieman

  Roles Conceptualization, Methodology, Writing – original draft, Writing – review & editing

  Affiliations Department of Physics, Stanford University, Stanford, California, United States of America, Graduate School of Education, Stanford University, Stanford, California, United States of America

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