标题：Using Data Comparisons to Support a Focus on Distribution: Examining Preservice Teachers' Understandings of Distribution When Engaged in Statistsical Inquiry
出版社：International Association for Statistical Education
摘要：This exploratory study, a one group pretest-posttest design, investigated the
development of elementary preservice teachers¡¯ understandings of distribution as
expressed in the measures and representations used to compare data distributions.
During a semester-long mathematics methods course, participants worked in small
groups on two statistical inquiry projects requiring the collection, representation,
analysis and reporting of data with the ultimate goal of comparing distributions of
data. Many participants shifted from reporting descriptive exclusively to the
combined use of graphical representations and descriptive statistics which supported
a focus on distributional shape and coordinated variability and center. Others gained
skills and understandings related to statistical measures and representations yet
failed to utilize these when comparing distributions. Gaps and misconceptions in
statistical understanding are discussed. Recommendations for supporting the
development of conceptual understanding relating to distribution are outlined.
