这是取对数做一阶差分后的数据 共77个
应该是拟合一个arma（1,0）模型 可是我弄不出来
不知道是哪里错了  
谁能帮帮我啊
0.00734597410719484
-0.0100403554094832
0.00427989652476768
0.00613101589843268
0.00403289491055236
-0.000428733076482501
-0.000484633969593418
-0.00854863887352142
-0.0235305738685829
0.00720856352272392
-0.0060125522743375
-0.011322299428107
0.0246700526654688
0.0171079159669762
-0.00122947683844288
-0.00983586115901414
-0.0130212399675029
-0.0100166276886959
-0.0181672311736278
-0.00242948361945583
0.0520869699117874
-0.00817141904545071
0.021262205884109
0.00775235408003105
-0.00214949981275225
-0.0135420630401955
0.0200608351431573
0.0191211092728318
0.000151217068570908
0.000361911630323064
0.00190360468620021
-0.00492048190175431
-0.00198588637799624
-0.0123219237137553
0.00533662227983722
-0.0051315867940005
0.00466792224389945
0.0187845539321261
-0.00112331334566385
-0.023479924802877
0.00287868953000636
0.00275524175041753
-0.0190090651722121
-0.0107378722762812
-0.00969490567985698
-0.0130093243547513
0.00296365933680587
-0.0197908975027268
-0.00437853683724576
0.00543024712260909
-0.00211945762251808
-0.00458985063055017
-0.0042544709956811
-0.0189599156783862
0.00736001555057797
0.0352081981463686
-0.0169785408552512
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0.0192168093320433
0.0087028870993926
0.0186213347658253
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0.0232549582525428
-0.0111749839183579
-0.0141723438617456
-0.0159253159746502
0.00180761357123682
-0.0131783568579715
-0.00987554854261496
-0.00287734591230748
-0.00963929982016509
0.00633926367078086
-0.0143281110809337
0.0175691301217542
-0.00856609128258423