|
|
>> A=rand(3)5 K& Y# Y' ^: t0 s# w5 }
a=mean(A,1) %按列平均- H! ~1 p( R P1 M% Q, W$ ^6 o5 r
b=mean(A,2) %按行平均, g, n! S4 S! b; ^# [( h- t# V
c=mean(A(: )) %全部平均! p+ Q0 H; {) X9 ^
A =( A% ^% F- c8 z
0.8134 0.8940 0.2876
9 t: W, j6 z! K9 E+ W% |; `* e/ U0.7185 0.9507 0.92649 H" _7 T7 f% \* _
0.5008 0.4624 0.4963) d# {' D4 B3 J; D" _$ d3 T/ }
a =
+ s3 f. ~- E' u; w+ U% K( v0.6776 0.7690 0.5701
1 n) d" q. H# xb =
" e% p% R$ {& s% d; Z4 C" a) S/ X0.6650
, j; d7 _; A& T0 S0.86521 y3 `) m* @$ v. [8 w
0.4865
* ^$ y+ P2 d! h7 u: m# Hc =
4 y9 W7 M& s6 S, b y0.6722 |
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发表于 2021-7-27 14:42
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反对！