Session S2C
978-1-4244-6262-9/10/$26.00 ©2010 IEEE October 27 - 30, 2010, Washington, DC
40
th
ASEE/IEEE Frontiers in Education Conference
S2C-1
Work in Progress - Design and Assessment of an
Asynchronous On-Line Graduate Statistics Course
Larry G Richards
University of Virginia, lgr@virginia.edu
Abstract – Since 1985, the University of Virginia has
offered a graduate course Probability and Statistics for
Engineers and Scientists. A similar course has been
offered at Virginia Commonwealth University. Both are
essential components in Virginia’s Commonwealth
Graduate Engineering Program – a distance learning
initiative involving universities, industry and government
partners. This course has two distinct audiences - full
time students in-residence at UVA, and those who attend
classes through CGEP while maintaining full-time jobs.
In this paper, we review the results of the first offering of
this course in an asynchronous on-line mode. All lectures
were recorded in Camtasia and coordinated with
PowerPoint slides (available as PDFs). Student reactions
were assessed through surveys and anonymous feedback,
as well as comments and e-mails. The level of acceptance
of the on-line lectures was surprising. Most students
reported high levels of satisfaction with the quality of the
material, mode of delivery, flexibility and convenience.
Index Terms – Asynchronous learning, Distance Education,
On-line Learning, Electronic Instructional Media.
INTRODUCTION
Probability and Statistics for Engineers and Scientists has
been offered at The University of Virginia and Virginia
Commonwealth University for over 25 years in both
traditional and distance learning formats [4, 5]. As
enrollments grew, so did a series of logistical problems. In
large cities, students have difficulty commuting to the
receive sites. And because most off-grounds students work
full-time, business and military assignments frequently result
in irregular class attendance. When we started recording
classes and posting streaming video on the Internet, class
attendance dropped off, but student performance did not.
Many students reported accessing class materials from
airports, hotel rooms, homes and offices. Even on-grounds
students often miss classes as they pursue their research and
attend conferences and meetings. The different expectations,
learning styles, and study habits of these two distinct groups
caused some concern in the past, so we decided to assess
their reactions to and performance in a new mode of course
delivery. For several reasons we had decided to offer this
course on-line with asynchronous presentation of all
materials.
Traditionally this class involved thirty-two 75-minute
class periods where lectures were presented. A standard
textbook [1] and software package [2, 3] were required, and
homework, exams, and assignments were used to assess
student performance. We have incorporated cooperative
learning activities into these classes [6, 7] to try to overcome
competitive pressures and encourage students to help each
other master the material.
In the new version of the course, the lecture material has
been segmented into a series of 30 minute modules (chunks).
The modules are clustered into Units. Each unit focuses on a
coherent set of topics – data analysis and display, basic
probability and random variables, estimation, hypothesis
testing, analysis of variance, correlation and regression, and
quality control and assessment. The first four units are
required of all students; the last three are advanced topics,
and each student is free to choose which one(s) to pursue.
Students have access to the various units during particular
time frames, but they decide when and where to study them.
Each module has embedded assignments to facilitate active
learning. Tests and quizzes are taken in defined periods to
insure steady progress by the students. Learning is self-
directed, but paced. Supplementary modules review
prerequisite knowledge, and others provide deeper coverage
of selected concepts and methods. The goal is a personalized
path through the material relevant to the students’ interests
and needs.
The design of the course was influenced by similar
efforts spanning over 60 years. Don Dulany, Jerry Uhl, and
Burks Oakley at Illinois developed unique delivery systems
for courses in psychology, calculus, and electric circuits,
respectively. At Michigan State, Peter Signell constructed a
self paced introduction to Physics based on short modules
focused on key topics, and Ray Frankmann taught Statistics
by analyzing the relations between concepts and procedures
and revealing these cognitive maps to his students. The
organizational and logistic aspects of our course are based
on well established “best practices”, and are grounded in the
literatures of the learning sciences and educational theory.
PILOT ON-LINE STATISTICS COURSE
This semester we had 63 students in the graduate statistics
class - 20 on-grounds at the University of Virginia and the