Abstract
Statistical literacy is a comparatively new concept in mathematics and while there is some consensus about how it is defined, there has been limited research on how the concept is measured within a school context. This paper, reports on the development and validation of an instrument to measure middle school students’ self-efficacy for statistical literacy. The items were developed from the relevant research literature and then tested on a sample of 366 students. A Rasch measurement methodology was used to create the measure and to provide evidence for its construct validity. The evidence reported in this paper indicates that the proposed instrument has suitable reliability and validity properties.
Colin Carmichael, Ian Hay