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Lecture 2

CMN 3102 Lecture Notes - Lecture 2: John Vincent Atanasoff, Eyesteelfilm, Eniac


Department
Communication
Course Code
CMN 3102
Professor
Ivan Katchanovski
Lecture
2

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Lecture 2
Variables
Computer and Quantitative Research Methods
!Human computer: one who computes
!First digital computer: Abacus
The Atanasoff-Berry Computer (ABC)
!Invented and built in 1937-1942
!Speed up solutions of mathematical and statistical problems
o!by students
!No patent
!US District Court in 1973
o!Recognized John Atanasoff as the inventor of the electronic
digital computer
o!Annulled ENIAC Computer patents
Eyesteelfilm (Montreal) Documentary: Atanasoff – Father of the Computer
Variables
!Quantitative analysis:
o!Relies on variables
o!SPSS, etc.
!Variables:
o!Provide measurements of concepts
o!Contain different values
!Example:
o!Sex variable can have the following values:
!!1. Male
!!2. Female
!We have variation in terms of categories and we can define this by
giving the variables numbers.
Types of Variables
!Measurements Levels
o!Nominal
o!Ordinal
o!Interval/ratio
!!Combines interval and ratio variables
!Hypothesis Testing
o!Dependent
o!Independent
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