Data Types

• Qualitative Data 


  Expressed in words and is literature based.
• Quantitative Data


  Expressed numerically.
• Primary Data


  Original data that has been collected by the researcher, specifically for the investigation.
• Secondary Data


  Data that has been someone other than the person conducting the investigation.
• Meta-Analysis


  The process of combining the findings from a number of studies on a particular topic.
• Effect Size


  An overall statistical conclusion based on meta-analysis.