JSM 2011 Online Program

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Abstract Details

Activity Number: 419
Type: Contributed
Date/Time: Tuesday, August 2, 2011 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistical Education
Abstract - #303371
Title: A Comparison of Students' Inferential Reasoning in Three College Courses
Author(s): Sharon Lane-Getaz*+
Companies: Saint Olaf College
Address: 1520 Saint Olaf Avenue, Northfield, MN, 55057, USA
Keywords: assessment ; inference ; randomization ; p-value ; statistics education

This study compares inferential reasoning outcomes in three college statistics courses. The Reasoning about P-values and Statistical Significance (RPASS) scale was administered as a Pretest and Posttest to measure gains in inferential reasoning. Gains were adjusted for prior knowledge and mathematics ability. To validate and isolate the RPASS-8 measure, scores were correlated with ACT Mathematics, Reading, Science and English. Principal Components and Exploratory Factor Analyses further explore validity and score variation. RPASS score reliability is sufficient for group comparison (Cronbach's coefficient alpha = .73, N = 95; alpha = .69, N = 82). Seven items are identified that differentiate inferential reasoning by course. Also, seven items suggest difficulties respondents have after either of the introductory courses. Future research is discussed.

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