

Mean Value (MV) method and Advanced Mean Value (AMV) method use entire moments of random variables. Therefore, it should be more accurate than Mean Value First-Order Second-Moment (MVFOSM) method. Since MV and AMV methods use the full distributions of random variables, the results for U-Space approach and X-Space approach are different. The accuracy for using U-Space and X-Space approaches depends on the linearity of limit-state function in these two spaces.

