Fuzzy Investment Portfolio Selection Models Based on Interval Analysis Approach

Table 2

Variance based on fuzzy method.

Stock name	Variance
Vanke	0.001959
Konka	0.002526
Victor onward Textile	0.002652
Universe	0.002953
Tellus	0.003845
Shenxin	0.0056
Nonfemet	0.004228
Xinmao S&T	0.003022
INT’L Group	0.003809
Jinlu	0.00416
ZY Environment	0.002569
DaTong Gas	0.002516
Advanced Technology	0.00328
Fujian Electric	0.003027
Sinosteel	0.007421
Huayi Brothers	0.004313
China Merchants Bank	0.001113
Xi’An Aero Engine	0.003863
Ping An	0.001489
Petro China	0.000719