Correspondence analysis: Solution quality assessment
Correspondence analysis is a technique often thought of as an alternative to a crosstab (contingency table).
Perceptual maps: Choosing the correct normalization method
In this article you can find perceptual maps prepared using different normalization methods.
Series plot
The series plot is a type o linear or layered plot most often used to represent changes in time. The plot may represent size for a primary variable category or statistics for a...
50 years of SPSS – Statistical data analysis software
It all began in 1968, when Norman H. Nie, C. Hadlai (Tex) Hull and Dale H. Bent decided to develop software based on the idea of using statistics to transform raw data into...
Pointing the way with arrows
When creating dashboards, reports, or infographics, you often use other elements besides charts and tables. Individual numerical values are often presented as text (with a...
Visualising decision trees: The classic refurbished
In this post, we continue to discuss the visualisation of nested hierarchical data. In my previous blog, I showed how hierarchical data can be presented in a two-dimensional space...
Maps that grow out of trees: Data visualisation as an artform
In the previous PS blog “Trees that grow out of tables”, Janusz Wachnicki described how a good understanding of the humble crosstab can help us utilise classification trees more...
