# Blog

### Word cloud: an extraordinary visualisation from an ordinary table

Frequency, group structure, or percentage share analysis is one of the first tasks of an analyst.

### Hierarchical graph

Hierarchical data can be presented using various visualisations. Today’s article will focus on the hierarchical graph.

### Correspondence analysis: calculating distances in a table

Correspondence analysis is one of the most convenient and popular exploratory techniques in data analysis.

### 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 information necessary for decision-making. At that time, not even wealthy Stanford University housing those young science enth…

### 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 suitable style that attracts the readers attention and matches the whole report visually), sometimes with meaningful icons. Suc…

### 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 as a treemap. This approach, however, has some limitations, namely the number of nesting levels. The treemap can handle…

### 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 effectively. When it comes to visualisation, can classification results be presented any other way than in a tree? The an…

### 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 selected quantitative variable. Individual points of the plot representing data are connected with a line from the first v…

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