What is Qualitative Data Analysis?


Does the modifier "qualitative" apply to "data" or "analysis"? It could be either, which is to say, both. There are qualitative data and quantitative data. There are qualitative analytical procedures, and quantitative analytical procedures. 

Data

Qualitative data include: text and videotaped behavior.

Quantitative data include: interval and ratio level measurements, such as IQ or temperature. 

Somewhere in between qualitative and quantitative are the results of structured tasks like pilesorts, as well as categorical or nominal measurements. 

Analysis

Qualitative analytical methods include: text coding, intuition, graphical displays, grounded theory methods, deconstruction, Levi-straussian analysis, dream analysis

Quantitative data include: statistical techniques, multivariate methods. 

Somewhere in between qualitative and quantitative are things like Ragin's boolean induction technique.

Can we mix and match? 

Given that the qualitative/quantitative distinction applies to both data and analysis, can't we use either kind of analysis on either kind of data? Yes

Type of Data  

Type of Analysis

  Qualitative In-Between Quantitative
Qualitative
  • Literary criticism
  • Interpretation
  • Thematic coding
  • Boolean algebra?
  • coding
  • Boolean algebra
  • MDS
  • Statistical analysis of text frequencies or code co-occurence

 

Quantitative
  • Interpretation of statistical results
  • Graphical displays of data
  • Naming factors/clusters in factor analysis & cluster analysis
 
  • Std statistics (e.g., regression)
  • Multivariate methods