A common categorization for data visualizations is exploratory and explanatory.
数据可视化的关键是可解释，可讲故事
关于决策树部分，决策树的末节又叫做叶节点，预测取决于叶节点内哪一类的样本相对较多
Commonly we reduce these two modes into:
Explanatory = has a story e.g. scrollytelling
Exploratory = doesn’t have a story e.g. dashboards