[Approach in multidimensional data analysis](http://math.agrocampus-ouest.fr/infoglueDeliverLive/membres/Francois.Husson/Rcorner)
## Correspondence Analysis
### Data et objectifs
The main point of **correspondence analysis** is studying the **links between pairs of qualitative variables**. This really means looking at the difference between the given data, and what it would be like if the variables were independent. We're therefore going to see how the analysis captures deviation from independence. Our reasoning will mainly be geometrical, creating point clouds for the rows and point clouds for the columns. Projecting these clouds onto planes will give some useful representations.