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>> A=rand(3)6 ^& y S5 Y# E2 j' ?/ m, m1 a. @
a=mean(A,1) %按列平均
7 i% {$ m/ S; F% ~+ |b=mean(A,2) %按行平均7 q U" S9 [+ R4 T2 G9 Q' H; a0 T! s
c=mean(A(: )) %全部平均& K* t' u8 U( w( F7 k- J; p
A =
$ u: W6 J7 V4 W( }; V$ R! a0.8134 0.8940 0.2876" _5 m9 ]$ J. E2 O
0.7185 0.9507 0.9264$ A" J& e* C8 U; Q+ s# ^: z* S0 W
0.5008 0.4624 0.4963, b- m+ q" D0 m! f
a =
2 x0 M- M$ c4 z0.6776 0.7690 0.5701! |5 b/ b& `5 A* Z
b =9 e; c% M, f/ A [# R6 `! m: [
0.6650
& ]" w5 U; s& p9 w' V& I' M0.86522 v! V o/ w9 L# e
0.4865
1 p$ p+ M! X/ D) G0 G: ec =
& ~9 _8 d( ]+ h2 O" T4 _5 ?0 S( x, O0.6722
2 a* T& L/ A3 U% i1 q8 T>> |
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