N

真值

50

100

200

0.7

0.6939(0.1719)

0.7011(0.1142)

0.7048(0.0923)

−0.1

−0.098(0.1556)

−0.1056(0.1191)

−0.1089(0.1085)

0.01

0.0160(0.0015)

0.010(0.0010)

0.0134(0.0011)