Using Online Video Examples in Introductory Business Statistics

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Using Online Video Examples in Introductory
Business Statistics

• Monnie McGee, Jing Cao, Lynne Stokes
• Department of Statistical Science
• Robert Skinner, Ian Aberle, and Steve Snider
• Academic Computing Services, Office of the
  Provost
• November 9, 2005

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Outline

• Motivation
• Static vs. Dynamic Examples
• Equipment
• Recording the Videos (live!)
• More Example Videos
• Going Further

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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

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Possible Solutions

• Class example day
• Teach by example
• Work all homework problems in class
• Get creative

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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

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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.

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Video Version
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Equipment

• Current Implementation
• Headset microphone
• Macintosh Computer
• Snap Z Pro software
• Digital Writing Tablet
• Original Implementation
• Document camera (Elmo Desktop Presenter)
• Sony Media Converter audio mixer
• iMovie software (free with mac)

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Document Camera

• Elmo DT-150AF PAL Desktop Presenter
• Portable (1.9 kg)
• Zoom capability
• Remote Control

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Snap Z Pro Software

• Captures activity on screen
• Used to capture Excel and PowerPoint
• 69

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Recording the Videos

• A simple work by hand problem
• Concept problems
• Incorporating PowerPoint slides
• Incorporating Excel

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Going Further

• Assessment of student attitudes
• Creating a CD of examples that students can
  purchase with their textbooks
• Virtual Guest Lecturers