As part of an NSF funded project we developed new course materials for a general introductory statistics course designed to engage students in statistical discovery. The materials were designed to actively involve students in the design and implementation of data collection and the analysis and interpretation of the resulting data. Our overall…

The accuracy with which regression models estimate treatment effects is dependent upon a number of conditions. The stability of the regression line (a function of sample size and correlation between pretest and posttest) is said to be the most important of these conditions. The utility of regression models is proportional to the size of the…

This final evaluation report of the 1970-71 New Haven Bilingual Education Program's effectiveness in the various areas of instruction is a presentation of analyses of data gathered on student performance in oral language proficiency (English only), reading comprehension (English only), mathematics, and student self concept (administered in the…