利用一元线性回归模型预测的基本思路是，先根据x、y的历史数据，求出________的值，建立起回归模型，再运用模型计算出不同的x所对应的不同的y值。-湖北继续教育网网校

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[填空题]利用一元线性回归模型预测的基本思路是，先根据x、y的历史数据，求出________的值，建立起回归模型，再运用模型计算出不同的x所对应的不同的y值。

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