1、第第三三章章把握热点考向把握热点考向理解教材新知理解教材新知应用创新演练应用创新演练3.23.2回回归归分分析析考点一考点一考点二考点二考点三考点三x/百万元百万元24568Y/百万元百万元3040605070i12345合计合计xi2456825yi3040605070250 xiyi601603003005601 380 x416253664145温度温度(x)010205070溶解度溶解度(y)66.776.085.0112.3128.0 x(0.01%)104180190177147134150191204121Y(min)100200210185155135170205235125i
2、12345678910 xi104 180 190 177 147 134 150191204121yi100 200 210 185 155 135 170205235125xiyi10 40036 00039 90032 74522 78518 09025 50039 15547 94015 125x2468Y30405070 x21232527293235Y711212466115325x21232527293235Z1.9462.3983.0453.1784.1904.7455.784身高身高x/cm60708090100110体重体重Y/kg6.137.909.9912.1515.0217.50身高身高x/cm120130140150160170体重体重Y/kg20.9226.8631.1138.8547.2555.05x60708090100110Z1.812.072.302.502.712.86x120130140150160170Z3.043.293.443.663.864.01
