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.
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。
And if you try to do a best-line fit, well, it doesn't seem to follow a linear trend.
然后你可以试着做个直线拟合，这个看上去就不像是呈直线趋势的。
Linear regression analysis is one technique for estimation a line of best fit.
线形回归分析是一向估算最优拟和线的技术。
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