Christopher Engledowl|James E. Tarr
Secondary Teachers’ Knowledge Structures for Measures of Center, Spread &amp; Shape of Distribution Supporting their Statistical Reasoning
New Mexico State University
recent standards reform documents across globe called statistical literacy end high school thus important teachers develop deep understanding content despite relatively thick literature base connecting students content knowledge reasoning research connections among practicing teachers critical need study contributes lack research examining knowledge structures statistical reasoningand possible ways knowledge structures supported reasoningof stratified purposeful sample nine middle secondary mathematics teachers responded released items levels conceptual understanding statistics locus assessment two 6090 minute taskbased clinical interviews knowledge structures categorized compatibleconnected incompatibleconnected incompatibledisconnected teachers less incompatible knowledge elements structures engaged frequently reasoning coded sound however teachers frequently engaged sound unsound forms reasoning task item implications offered teacher education future research