30

0.4880

0.5633

0.6072

0.6221

0.6319

35

0.4938

0.5642

0.6077

0.6248

0.6362

40

0.4912

0.5685

0.6134

0.6272

0.6259

45

0.5013

0.5729

0.6135

0.6281

0.6274

50

0.5097

0.5771

0.6116

0.6315

0.6287

55

0.5104

0.5791

0.6148

0.6328

0.6262

60

0.5167

0.5842

0.6159

0.6357

0.6296

转化率平均值

0.4999

0.5717

0.6103

0.6283

0.6309

标准偏差

0.0105

0.0073

0.0055

0.0044

0.0050