5、iableCoefficientStd.Errort-StatisticProb. C-340.50471357.835-0.2507700.0882X2-0.0016160.013520-0.1195290.1524X30.2323580.1280171.8150500.1671X46.3910521.7168883.7224630.0337X5-1.0467571.224011-0.8551870.0453X65.6734296.6672660.8509380.4573X7-474.3909355.7167-1.3336200.2745R-squared0.996391 Mean