A.SUM(A1:B.4B1:C4) B.SUM(B1+B.4) C.SUM(B1+B.2,B3+B4) D.SUM(B1,B.2,B3,B4)
A.+ B.^ C.< D.=
A.=AVERAGE(B2:B4) B.=SUM(B2:B4) C.=AVERAGE(B2,B3,B4) D.=(B2+B3+B4)/3