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

For CH2FOH (fluoromethanol)

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 daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.000541 -0.005327 -0.005327 -0.003412 -0.009577 -0.010078 -0.010767 -0.056062 -0.056507 -0.020000 -0.068404 -0.051150 -0.006946 -0.042130 -0.089632 -0.008122 -0.047957 -0.091220 -0.008356 -0.049801
MP3=FULL         -0.009117   -0.010312       -0.070202 -0.052654 -0.006442 -0.042438         -0.007846 -0.050658
MP4=FULL   -0.004979     -0.009200       -0.057856   -0.070500   -0.006438 -0.042584   -0.007607 -0.048824   -0.007835  
B2PLYP=FULL -0.000161 -0.001561 -0.001561 -0.001000 -0.002803 -0.002946 -0.003144 -0.015838 -0.015970 -0.005770 -0.019411 -0.014471 -0.002025 -0.012109   -0.002373 -0.013755   -0.002440 -0.014272
Quadratic configuration interaction QCISD(T)=FULL         -0.009149           -0.070433   -0.006398 -0.042526   -0.007559 -0.048771   -0.007787 -0.050741
Coupled Cluster CCSD=FULL         -0.009048         -0.019693 -0.069896 -0.052562 -0.006325 -0.042181   -0.007475 -0.048420   -0.007702 -0.050382
CCSD(T)=FULL         -0.009150           -0.070435 -0.052814 -0.006399 -0.042534 -0.092548 -0.007560 -0.048782   -0.007788 -0.050751
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 daug-cc-pVDZ daug-cc-pVTZ