Secondary Data Source
The analysis of secondary data plays a vital role in many fields of study, including the social sciences. The definition of secondary versus primary data is not based on specific qualities of the data itself but on its history and relationship to a specific analysis. A simple definition is that primary data are collected by a research group for the specific analysis in question, whereas secondary data are collected by someone else for some other purpose. So if a researcher conducts a survey and analyzes the results for his or her analysis, the data from the survey are primary data. If the researcher deposits the data in an archive and someone else unrelated to the original research team analyzes it 20 years later, then the ...
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Reader's Guide
Descriptive Statistics
Distributions
Graphical Displays of Data
Hypothesis Testing
Important Publications
Inferential Statistics
Item Response Theory
Mathematical Concepts
Measurement Concepts
Organizations
Publishing
Qualitative Research
Reliability of Scores
Research Design Concepts
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Research Ethics
Research Process
Research Validity Issues
Sampling
Scaling
Software Applications
Statistical Assumptions
Statistical Concepts
Statistical Procedures
Statistical Tests
Theories, Laws, and Principles
Types of Variables
Validity of Scores
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