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Problem: two way anova {{421,325,320,362},{118,102,122,56},{591,518,552,509},{14,26,20,2},{116,14,26,46}} [ Calculator, Method and examples ]

Solution:
Your problem -> two way anova {{421,325,320,362},{118,102,122,56},{591,518,552,509},{14,26,20,2},{116,14,26,46}}

Given problem
 Observation A B C D 1 421 325 320 362 2 118 102 122 56 3 591 518 552 509 4 14 26 20 2 5 116 14 26 46

 A B C D Row total (x_(r)) 1 421 325 320 362 1428 2 118 102 122 56 398 3 591 518 552 509 2170 4 14 26 20 2 62 5 116 14 26 46 202 Col total (x_(c)) 1260 985 1040 975 4260

sum x^2=1757768 ->(A)

(sum x_(c)^2)/(r)=1/5(1260^2+985^2+1040^2+975^2)

=1/5(1587600+970225+1081600+950625)

=1/5(4590050)

=918010 ->(B)

(sum x_(r)^2)/(c)=1/4(1428^2+398^2+2170^2+62^2+202^2)

=1/4(2039184+158404+4708900+3844+40804)

=1/4(6951136)

=1737784 ->(C)

(sum x)^2/(n)=(4260)^2/20

=18147600/20

=907380 ->(D)

Sum of squares total
SS_T=sum x^2 - (sum x)^2/(n)=(A)-(D)

=1757768-907380

=850388

Sum of squares between rows
SS_R=(sum x_(r)^2)/(c) - (sum x)^2/(n)=(C)-(D)

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