Subject: Make all your old videos and pictures digital - they will last forever

From: "Ryan Kane" <[email-masked]>
Date: Fri, 05 Aug 2016 09:13:07 -0700

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The baseline survey administered to students included questions on students background characteristics such as socioeconomic status as well as their prior exposure to statistics and the reason for their interest in possibly taking the statistics course in a hybrid format The endofsemester survey asked questions about their experiences in the statistics course Students in studyaffiliated sections of the statistics course took a final exam that included a set of items that was identical across all the participating sections at that campus The scores of study participants on this common portion of the exam were provided to the research team along with background administrative data and final course grades of all students both participants and for comparison purposes nonparticipants enrolled in the course

The participants in our study are a diverse group Half come from families with incomes less than and half are firstgeneration college students Less than half are white and the group is about evenly divided between students with college GPAs above and below Most students are of traditional collegegoing age younger than enrolled fulltime and in their sophomore or junior year

The data indicate that the randomization worked properly in that traditional and hybridformat students in fact have very similar characteristics overall The students who chose to participate in the study also have broadly similar characteristics to the other students registered for introductory statistics The differences that do exist are quite small For example participants are more likely to be enrolled fulltime but only by a margin of versus percent Their outcomes in the statistics course are also comparable with participants earning similar grades and being only slightly less likely to complete and p the course than nonparticipants

An important limitation of our study is that while we were successful in randomizing students between treatment and control groups we could not randomize instructors in either group and thus could not control for differences in teacher quality Instructor surveys reveal that on average the instructors in traditionalformat sections were much more experienced than their counterparts teaching hybridformat sections median years of teaching experience was and respectively Moreover almost all of the instructors in the hybridformat sections were using the CMU online course for either the first or second time whereas many of the instructors in the traditionalformat sections had taught in this mode for years

The experience advantage therefore is clearly in favor of the teachers of the traditionalformat sections The questionnaires also reveal that a number of the instructors in hybridformat sections began with negative perceptions of online learning which may have depressed the performance of the hybrid sections The hybridformat sections were somewhat smaller than the traditionalformat sections however which may have conferred some advantage on the students randomly igned to the hybrid format
Learning Outcomes

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