例1.47   數(shù)據(jù)的統(tǒng)計分析和相關(guān)分析。
>> X=[5.3 13 0.4; 5.1 11.8 -1.7;
      	   3.7 8.1 0.6; 1.5 7.7 -4.5]
X =
    	5.3000   13.0000    0.4000
    	5.1000   11.8000   -1.7000
    	3.7000    8.1000    0.6000
    	1.5000    7.7000   -4.5000
>> mean(X)
ans =
    	3.9000   10.1500   -1.3000
>> S=corrcoef(X)
S =
    	1.0000    0.8810    0.7378
    	0.8810    1.0000    0.4310
    	0.7378    0.4310    1.0000