The problem with GPAs comes from making a comparison across schools. An 3.95 might be earned by a student at one school, but similar work at another might only be a 3.5. In terms of percentile rank (based on a comparision within a school), the student might have similar scores regardless of which school he or she attends. I'm not sure that this is realistic with very small schools, but that's the assumption made when saying class rank is more predictive than GPA.
>>> [EMAIL PROTECTED] 6/1/04 11:23:01 AM >>> I recently read a claim that HS rankings might be better predictors of first year college GPA than HS GPA because of differences in grading standards at various high schools. This sounds reasonable but because rank is based on HS GPA, it is basically like taking interval data and converting it to ordinal data. Usually, you would think that using a lower scale of measurement would result in the loss of information that would decrease the predictive power of the variable. Does anyone have any idea if such rankings could be better predictors than the interval data on which they were based? Rick Dr. Rick Froman Associate Professor of Psychology John Brown University Siloam Springs, AR 72761 (479) 524-7295 e-mail: [EMAIL PROTECTED] web: <http://www.jbu.edu/academics/sbs/rfroman.asp> http://www.jbu.edu/academics/sbs/rfroman.asp --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED] Michael T. Scoles, Ph.D. Dept. Psychology & Counseling University of Central Arkansas Conway, AR 72035 --- You are currently subscribed to tips as: [EMAIL PROTECTED] To unsubscribe send a blank email to [EMAIL PROTECTED]
