共50条信息
\((1)\)画出散点图;
\((2)\)如果\(y\)对\({{x}_{{}}}\)有线性相关关系,求回归方程;\((\)参考公式:\(\widehat{b}=\dfrac{\sum\limits_{i=1}^{n}{{{x}_{i}}{{y}_{i}}-n\overline{x}\overline{y}}}{\sum\limits_{i=1}^{n}{x_{i}^{2}}-n{{(\overline{x})}^{2}}}\),\(\hat{a}=\overline{y}-\widehat{b}\overline{x})\)
\((3)\)预测\(12\)月份的用电量.
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