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ERIC Number: EJ925275
Record Type: Journal
Publication Date: 2011-May
Pages: 20
Abstractor: As Provided
Reference Count: 41
ISSN: ISSN-1570-1824
Statistical Analysis when the Data Is an Image: Eliciting Student Thinking about Sampling and Variability
Hjalmarson, Margret A.; Moore, Tamara J.; delMas, Robert
Statistics Education Research Journal, v10 n1 p15-34 May 2011
Results of analysis of responses to a first-year undergraduate engineering activity are presented. Teams of students were asked to develop a procedure for quantifying the roughness of a surface at the nanoscale, which is typical of problems in Materials Engineering where qualities of a material need to be quantified. Thirty-five teams were selected from a large engineering course for analysis of their responses. The results indicate that engagement in the task naturally led teams to design a sampling plan, use or design measures of center and variability, and integrate those measures into a model to solve the stated problem. Team responses revealed misunderstandings that students have about measures of center and variability. Implications for instruction and future research are discussed. (Contains 4 tables and 2 figures.)
International Association for Statistics Education and the International Statistical Institute. PO Box 24070, 2490 AB The Hague, The Netherlands. Tel: +31-70-3375737; Fax: +31-70-3860025; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A