Bar graphs

0

tandfonline.com – Students’ Understanding of Bar Graphs and Histograms: Results From the LOCUS Assessments

Posted on by Troels Gannerup Christensen - Læst 40 gange

tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: ABSTRACT ABSTRACT Bar graphs and histograms are core statistical tools that are widely used in statistical practice and commonly taught in classrooms. Despite their importance and the instructional time devoted to them, many students demonstrate misunderstandings when asked to read and interpret bar graphs and histograms. Much of the research that has been conducted about these misunderstandings has been with students in introductory statistics classes at the college level. In this article, students in grades 6–12 completed multiple-choice and constructed-response questions about bar graphs and histograms as part of a larger study. The same misunderstandings that college-level students demonstrate were found in these younger students. Link til kilde

0

tandfonline.com – Assessing Students’ Understanding of Variability in Graphical Representations that Share the Common Attribute of Bars

Posted on by Troels Gannerup Christensen - Læst 29 gange

tandfonline.com har udgivet en rapport under søgningen “Teacher Education Mathematics”: ABSTRACT ABSTRACT Everyday encounters with graphical representations include a variety of graphs that superficially appear similar due to their use of bars. This article examines students’ conceptions and misconceptions regarding the interpretation of variability in histograms, bar graphs, and value bar charts. A multiple choice assessment with brief written justifications was administered to students in an introductory level college statistics course. Assessment items included comparisons of variability among same-type graphs and questions regarding students’ ability to identify key features of the graphs. The study revealed that students struggle to make sense of the underlying structures of the various types of graphs and often disregard graph type as they transfer correct conceptions of variability for one type of graph erroneously to… Continue Reading →