Data can derive from a variety of methods.  This chapter describes the range of sources for data, with examples.
 
Introduction
The Quality of Data: Validity, Reliability, Bias, and Error
Qualitative vs. Quantitative Data
Structured or Quantitative Data
Unstructured or Qualitative Data
Sources of Data
Locating Relevant Data for the Organization: Data Discovery
Managing Data Collection
Firm Evolution and Changing Data Needs
Summary