pure heteroscedasticity

例句：

1. 1. The model's performance is pure heteroscedasticity, which means it's not just random but also depends on the specific circumstances.
   这个模型的性能是纯异方差性的，这意味着它不仅随机，还取决于特定情况。
2. 2. In statistics, the concept of homoscedasticity is often used to describe a situation where the variance ofa variable is constant across different levels of the independent variable.
   在统计学中，常使用同方差性的概念来描述一个变量的方差在独立变量的不同水平上保持不变的情况。
3. 3. Pure heteroscedasticity can be seen in many real-world scenarios, such as the effect of weather on crop yields or the impact of economic policies on income inequality.
   许多现实世界的场景都可以看到纯异方差性，例如天气对农作物产量的影响或经济政策对收入不平等的影响。