统计学 - 条形图
条形图以可视化的方式呈现定性数据。
条形图
条形图用于显示定性（分类）数据的分布。
它显示了数据中值的**频数**。频数是指该值在数据中出现的次数。
每个类别都用一个条形表示。条形的高度表示该类别在数据中值的频数。
这是一个截至2020年各类别诺贝尔奖获得者人数的条形图。
有些类别存在的时间比其他类别长。某些类别中有多个获奖者也更为常见。因此，每个类别中的获奖者数量不同。
**注意：**条形图类似于直方图，直方图用于定量数据。
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