A Portfolio Selection Model Based on the Interval Number

Table 3

The investment risk for different bs in (18).

b	Risk	b	Risk
0	0.190	0.55	0.107
0.1	0.182	0.6	0.097
0.2	0.134	0.7	0.086
0.3	0.128	0.8	0.078
0.4	0.115	0.9	0.056
0.5	0.109	1.0	0.045