Chapter 1- Introduction to Data

# Why used categorical coding professor dai trang le

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Unformatted text preview: though the data are numeric values, the variable is still categorical. Why used categorical coding? Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 13 / 32 What are data? Numerical or Categorical? Categorical Data are often coded using numbers. Although the data are numeric values, the variable is still categorical. Why used categorical coding? Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 13 / 32 What are data? Numerical or Categorical? Categorical Data are often coded using numbers. Although the data are numeric values, the variable is still categorical. Why used categorical coding? Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 13 / 32 What are data? Numerical or Categorical? Categorical Data are often coded using numbers. Although the data are numeric values, the variable is still categorical. Why used categorical coding? Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 13 / 32 What are data? Data Generation Here are a few places where data are collected, displayed, transmitted. Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 14 / 32 What are data? Data Generation Here are a few places where data are collected, displayed, transmitted. Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 14 / 32 What are data? Data Generation Here are a few places where data are collected, displayed, transmitted. summa Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 14 / 32 What are data? Data Generation Here are a few places where data are collected, displayed, transmitted. Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 14 / 32 What are data? Some Questions on Data Data are generated, collected, displayed, transmitted. Where do the data go? How long are they stored? Who is allowed access and to what? (Edward Snowden’s NSA leaks) How easy it it for unqualiﬁed people to get access? What can be learned from combining data sources? Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 15 / 32 What are data? Data Collection Methods Data Collection Polling, Preferred Customer Card, Google Analytics, Application for college admission, Doctor’s charts. Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 16 / 32 What are data? Data Processing Data Processing Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 17 / 32 What are data? Data Processing Data Processing Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 17 / 32 What are data? Data Display - Visualization Data Display/Visualization Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8, 2014 18 / 32 What are data? Data Display - Visualization Data Display/Visualization Professor: Dai-Trang Le Chapter 1 – Introduction to Data January 8...
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## This document was uploaded on 03/03/2014.

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