将此数据制作成平均CPU使用率与每分钟事件的关系图，会发现这个关系是线性的(请参阅图1)。
When this data is graphed out with the average CPU usage versus events per minute, you can see that the relationship is linear (see Figure 1).
“165年来有记录的平均寿命线性增长，并不是说人的寿命已接近极限。”他们在文章中写道。
"The linear increase in record life expectancy for more than 165 years does not suggest a looming limit to human lifespan," they write.
如果概率很低，那就可以不采用平均值是最佳预测值这一无效假设，并且相应地可以确信简单线性模型是与数据良好吻合的。
If that probability is low, then you can reject the null hypothesis that the mean is the best predictor and, correspondingly, gain confidence that a simple linear model offers a good fit for the data.
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