[MATLAB基础] 新手求助！！求大神！！！！

[宋小神]

我用的是matlab2009a，刚开始学，在双总体正态分布的方差检验时输入如下：
X=[78.1 72.4 76.2 74.3 77.4 78.4 76.0 75.5 76.7 77.3];
Y=[79.1 81.0 77.3 79.1 80.0 79.1 79.1 77.3 80.2 82.1];
[h,f,f1]=ftest0(X,Y,0.05,0)
然后按回车时为啥显示??? Undefined function or method 'ftest0' for input arguments of type 'double'.
还有这种x=[1.32 1.55 1.36 1.40 1.44];
[h,c,c1]=chitest (X,0.0048,0.05,0)
也是运行不出来。。真心无奈啊。。跪求大神！！！！！！！