joint frequency function

例句：

1. 1. In the joint frequency function, we can see how different variables interact with each other.
   在联合频率函数中，我们可以看到不同变量是如何相互影响的。
2. 2. The joint frequency function helps us understand the relationship between two variables.
   联合频率函数有助于我们理解两个变量之间的关系。
3. 3.By analyzing the joint frequency function, we can identify the patterns and trends in the data.
   通过分析联合频率函数，我们可以识别数据中的趋势和模式。