A Cross-cultural Psychometric Evaluation of the Attitude toward Statistic Scale Estrada’s in Teachers

Several attitudes toward Statistic scales have been proposed in the literature by considering samples of university students but specific scales with cross-cultural validity are not known for teachers. In this study we show the psychometric characteristic of the scale of Attitudes toward the Statistic proposed by Estrada (2002) and Estrada Batanero and Fortuny (2003). The scale was applied to 288 in-service and prospective teachers, 140 from Spain and 148 from Peru. Item analysis with a classic perspective and using rating model (Andrich, 1978) was conducted. Results indicate that three items were not consistent with the scale. In addition, the final version of the scale was submitted to an evaluation of its dimensionality and reliability. Results indicate that scale is reliable and presents evidence of multidimensionality.