Phys. Rev. ST Phys. Educ. Res. 3, 020107 (2007) [8 pages]Applying clustering to statistical analysis of student reasoning about two-dimensional kinematics
R. Padraic Springuel, Michael C. Wittmann, and John R. Thompson Received 24 May 2007; published 3 December 2007 We use clustering, an analysis method not presently common to the physics education research community, to group and characterize student responses to written questions about two-dimensional kinematics. Previously, clustering has been used to analyze multiple-choice data; we analyze free-response data that includes both sketches of vectors and written elements. The primary goal of this paper is to describe the methodology itself; we include a brief overview of relevant results. ©2007 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevSTPER.3.020107 Supplemental Material
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