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开盘价收盘价年度收益率宝钢股份权重中国联通权重期望收益率宝钢股份20030.833.433.13253012100.51698966620043.452.76-0.20.90.10.55185234120052.752.22-0.1927272730.80.20.58671501720062.157.082.2930232560.70.30.62157769320077.258.210.1324137930.60.40.65644036820086.253.76-0.39840.50.50.69130304420093.874.960.2816537470.40.60.72616571920109.05.89-0.3455555560.30.70.76102839520115.948.650.4562289560.20.80.79589107120124.664.710.0107296140.10.90.830753746010.865616422中国联通20031.732.50.44508670520042.51.01-0.596200526.832.41520061.836.362.47540983620074.4712.831.87024608520081.944.851.5200957.180.43620107.25.29-0.26527777820115.415.21-0.03696857720125.217.360.412667946均值标准差相关系数协方差宝钢股份0.51701.2045430070.173737050.210111328中国联通0.86561.115558124无风险收益率0.045最小方差点均值标准差宝钢股份0.4546289240.7071206150.879898057中国联通0.545371076最优比重均值标准差宝钢股份0.2754552270.769585360.92046776中国联通0.72454477342.76%57.24%11.78%切线：00.04530.98%1.1513140.4674332960.35481.50.595371092斜率：0.3669140610.595371092
