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>> A=rand(3)
- S( e8 @: b/ C2 F% W( c4 g/ Ja=mean(A,1) %按列平均
/ H* `5 D( y) s, bb=mean(A,2) %按行平均' s( r1 k# f7 B9 w8 {, L/ i. Z- H
c=mean(A(: )) %全部平均( ^2 R! |& E Q$ k) T" d' J
A =" V0 ~9 \$ ?5 G5 h! Y& d t; Q
0.8134 0.8940 0.2876
2 q' B+ P6 v6 n$ k/ \6 O; B0.7185 0.9507 0.9264
: ^+ i: L% S0 f$ C. m0.5008 0.4624 0.4963
- j0 V2 \) c) q3 g: ^" B; E5 Pa =
z' E/ }& u, W0.6776 0.7690 0.57018 g/ E0 W2 `$ g" y+ w6 m6 n- Q3 M
b =
L b) \ x5 M: v$ i0.6650$ ~3 g! H- i( g& o9 Z: l3 n, b
0.8652! J: q- c' A8 U& P
0.4865
2 j9 n& n- z jc =
7 S) C3 c! u8 y, h1 x% I0.6722 |
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