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Energy differences between frozen core and all electrons correlated.
MP2, MP3, MP4, B2PLYP, CCSD, and CCSD(T)

For LiOH (lithium hydroxide)

Energies in Hartree
Methods with standard basis sets
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.000460 -0.002259 -0.002259 -0.001524 -0.003863 -0.004032 -0.008541 -0.032575 -0.032698 -0.009281 -0.038193 -0.030255 -0.002833 -0.026653 -0.048438 -0.010115 -0.030542 -0.051923
MP3=FULL         -0.003616   -0.024800       -0.040653 -0.032312 -0.002614 -0.028457        
MP4=FULL   -0.002162     -0.003682       -0.035331   -0.041118   -0.002631 -0.028887   -0.011085 -0.033081  
B2PLYP=FULL -0.000157 -0.000685 -0.000685 -0.000469 -0.001175 -0.001224 -0.002595 -0.009461 -0.009499 -0.002757 -0.011145 -0.008789 -0.000849 -0.007907   -0.003101 -0.009088  
Quadratic configuration interaction QCISD(T)=FULL         -0.003668           -0.041180   -0.002621 -0.028944   -0.011141 -0.033174  
QCISD(TQ)=FULL         -0.003666   -0.009107       -0.041195   -0.002620 -0.028950 -0.052116 -0.011153 -0.033195  
Coupled Cluster CCSD=FULL         -0.003620         -0.009216 -0.040888 -0.032610 -0.002589 -0.028728 -0.051694 -0.011113 -0.032966 -0.055699
CCSD(T)=FULL         -0.003667           -0.041178 -0.032721 -0.002620 -0.028943 -0.052097 -0.011143 -0.033176 -0.056079
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ