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>> A=rand(3)
7 W, X8 h `/ z+ ya=mean(A,1) %按列平均
6 P ]9 B8 e/ Db=mean(A,2) %按行平均& {1 C( z! p$ R0 r; a6 U
c=mean(A(: )) %全部平均
3 b4 ]4 m# R; M$ [A =7 R% O0 p0 L$ W9 }" D: F% p' y
0.8134 0.8940 0.2876; m* w3 _9 _& h& ^, ?- m ^2 y
0.7185 0.9507 0.92649 A* g; u1 N g7 k3 W
0.5008 0.4624 0.4963, v% G% }# `2 E/ V9 r4 K
a =' U$ N/ Y6 C$ C- K5 _5 {4 m
0.6776 0.7690 0.5701
: \8 V8 S8 z* P3 [0 W( ?b =
5 l3 |9 J V0 _8 o0.66509 V" t: R4 H* x# F; R; y+ J) f
0.8652
" ^$ k* c. z8 ]0.4865' p0 v+ X+ K8 I' X1 Z
c =" @" f5 d" j! l$ S% L
0.67228 |3 l" ]: c7 g/ q$ W
>> |
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