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Using Online Video Examples in Introductory Business Statistics. Monnie McGee Assistant Professor, Department of Statistical Science Robert Skinner, Ian Aberle, and Steve Snider Academic Computing Services, Office of the Provost Southern Methodist University. Outline. Motivation

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Using Online Video Examples in Introductory Business Statistics


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using online video examples in introductory business statistics

Using Online Video Examples in Introductory Business Statistics

Monnie McGeeAssistant Professor,Department of Statistical Science

Robert Skinner, Ian Aberle, and Steve Snider

Academic Computing Services, Office of the Provost

Southern Methodist University

outline
Outline
  • Motivation
  • Static vs. Dynamic Examples
  • Equipment
  • Recording the Videos (live!)
  • More Example Videos
  • Going Further
the problem
The Problem

“She never gave us enough examples on how to work the homework problems”

“I fail to see how this course will ever be useful to me in the future”

possible solutions
Possible Solutions
  • Class example day
  • Teach by example
  • Work all homework problems in class
  • Get creative
why videos
Why Videos?
  • Solutions posted on course website are not dynamic
  • Important for students to see thought processes involved in working the problem
  • Digital video allows placement on the course website
typical problem and solution
Typical Problem and Solution

Employers may ask job applicants to take an IQ test if the test has been shown to predict performance on the job. Score on one test for the 20 to 34 age group are approximately Normally distributed with mean of 110 and standard deviation of 25. Use the Empirical Rule to answer the following questions:

a) About what percent of the people in this age group have score above 110? Since 110 is the mean, and the mean is equal to the median for a normal distribution, 50% of the people in this group will have scores above the mean.

b) About what percent have scores above 160? 160 is 2 standard deviations from the mean. That means that there are 2.5% (5%/2) of the scores above the mean.

equipment
Equipment
  • Document camera (Elmo Desktop Presenter)
  • Lavelier microphone
  • Macintosh Laptop Computer
  • Sony Media Converter & audio mixer
  • iMovie software (free with mac)
  • Snap Z Pro software
  • Apple Xserve and Quick Time Streaming Server
to stream or not to stream
To Stream or Not To Stream
  • Streaming server allows play of the video while it is still downloading
  • For on-campus connections, a regular server is probably fine
  • Over a modem at a student’s home, the videos would take all day to download.
document camera
Document Camera
  • Elmo DT-150AF PAL Desktop Presenter
  • Portable (1.9 kg)
  • Zoom capability
  • Remote Control
  • $
media converter
Media Converter
  • Canopus ADVC-100 A/D Converter
  • Converts analog video & audio to a DV stream
  • Captured by Firewire connection
  • $ 299
snap z pro software
Snap Z Pro Software
  • Captures activity on screen
  • Used to capture Excel and PowerPoint
  • $69
equipment13
Equipment
  • Document camera (Elmo Desktop Presenter)
  • Lavelier microphone
  • Macintosh Laptop Computer ($1200 iMAC)
  • Sony Media Converter & audio mixer
  • iMovie software (free with mac)
  • Snap Z Pro software
  • Apple Xserve and Quick Time Streaming Server ($2000)
  • Autodesk Cleaner Software ($549)
recording the videos
Recording the Videos
  • A simple “work by hand” problem
  • Concept problems
  • Incorporating PowerPoint slides
  • Incorporating Excel
typical problem solution
Typical Problem & Solution
  • Cause of death is an important issue for life insurance companies; especially identifying the most likely causes of deaths for various demographic subgroups of the population. The number of deaths among persons aged 15 to 24 years in the United States in 1997 due to the seven leading causes of death for these age group were accidents, 12,958, homicide, 5793; suicide, 414; cancer 1583; heart disease, 1013; congenital defects, 383; AIDS, 275.
solution
Solution
  • Make a bar chart to display these data. Your chart should look something like this one, although the order of the bars is not important. It should be labeled correctly and clearly.
  • What additional information do you need to make a pie chart? We need to know the total number of deaths in this age group in 1997. We need that information to convert the numbers into percentages to be graphed into the pie chart.
more examples
More Examples
  • Using Snap Z Pro to capture manipulations on Excel
  • Concept question with PowerPoint
going further
Going Further
  • Assessment of student attitudes
  • Creating a CD of examples that students can purchase with their textbooks
  • Virtual Guest Lecturers