A correlogram or **correlation matrix** allows to analyse the relationship between each pair of numerical variables of a matrix. The **correlation** between each pair of variable is visualise through a scatterplot, or a symbol that

represents the correlation (bubble, line, number..). The diagonal represents the **distribution** of each variable, using an histogram or a density plot. This technique is widely used for **exploratory analysis** since it avoids to make

hundreds of plots to observe a matrix. The seaborn library allows to make them really easily through the **pairplot** function and this page gives a few examples.

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**Seaborn**

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