The current study sought to evaluate the SASTSc in two samples of students taking a statistics course that incorporates statistical software. The SASTSc was given at two time points, once at the beginning of the semester and then again at the end of the semester. Our evaluation included examining competing factor analytic models, examining…

Computational thinking is a way of thinking that covers 21st century skills and includes new generation concepts such as robotics, coding, informatics and information construction. Computational thinking has reached an important point especially in the field of science in line with the rapid developments in technology. Robotics applications,…

Data collected from surveys can result in hundreds of variables and thousands of respondents. This implies that time and energy must be devoted to (a) carefully entering the data into a database, (b) running preliminary analyses to identify any problems (e.g., missing data, potential outliers), (c) checking the reliability and validity of the…

Questionnaires administered manually can cause surreptitious peer pressure on the candidate to finish when 'the others" have completed theirs, forcing students to rush or skip individual items or may hinder the ability of noticing participants who may be having difficulty understanding certain items. These drawbacks can have serious…

With the explosive growth of e-portfolios in teacher preparation programs, it is essential for administration and other relevant stakeholders to understand the student perspective of e-portfolios' organizational uses. This article describes the validation of the modified Electronic Portfolio Student Perspective Instrument (EPSPI). The analysis…

Three numerical coefficients for analyzing the validity and reliability of ratings are described. Each coefficient is computed as the ratio of an obtained to a maximum sum of differences in ratings. The coefficients are also applicable to the item analysis, agreement analysis, and cluster or factor analysis of rating-scale data. (Author/BW)