例6-97  使用boxplot函數(shù)繪制樣本數(shù)據(jù)的盒圖。
>>  a = normrnd(1,4,50,1);
>> b = normrnd(6,1,50,1);
>> x=[a b]
x =
    0.2367    7.0477
    0.6838    6.8633
    3.7994    5.3576
   -2.1862    6.6600
   -2.2051    7.2941
    0.9696    6.3146
   -1.9072    6.8596
   -4.9636    6.1287
    4.4813    6.0166
   -0.0627    5.9272
   -5.2668    5.0057
   -0.5785    5.2526
0.4246    5.9692
   -8.3370    6.9884
   -4.4302    5.4010
   -6.2628    7.4766
    5.4337    5.1862
    0.4315    6.6450
    5.4510    4.6901
    3.2371    5.1326
    2.9135    5.5258
 ……
>>  boxplot(x,1,'b*',0,1)
>>  boxplot(x,1,'b-',1,0)
>>