To create a heatmap visualization, we need to identify variables that can be meaningfully represented in such a format. Heatmaps are particularly useful for visualizing the correlation between numerical variables or the intensity of occurrences across two categorical dimensions.
Given the structure of our dataset, it seems most appropriate to visualize correlations among numerical columns like age
, balance
, day
, duration
, and so on. Let's proceed by calculating and visualizing the correlation matrix as a heatmap.