关于多重比较矫正报错的咨询

尊敬的严教授及您的团队，我在进行two sample ttest时遇到了困难，请问老师是怎么回事？如何解决？

Warning: Rank deficient, rank = 2, tol =  1.687539e-14. 

> In palm_core at 1413

  In palm at 81

  In y_GroupAnalysis_PermutationTest_Image at 123

  In y_TTest2_Image at 92

  In DPABI_STAT_TOOL>ComputeButton_Callback at 531

  In gui_mainfcn at 96

  In DPABI_STAT_TOOL at 42

  In @(hObject,eventdata)DPABI_STAT_TOOL('ComputeButton_Callback',hObject,eventdata,guidata(hObject))

以上错误是因为我样本量的原因导致的吗？我是样本一组24一组52.

 

Warning: Matrix is singular to working precision. 

> In palm_core>fastt3d at 2757

  In palm_core at 1469

  In palm at 81

  In y_GroupAnalysis_PermutationTest_Image at 123

  In y_TTest2_Image at 92

  In DPABI_STAT_TOOL>ComputeButton_Callback at 531

  In gui_mainfcn at 96

  In DPABI_STAT_TOOL at 42

  In @(hObject,eventdata)DPABI_STAT_TOOL('ComputeButton_Callback',hObject,eventdata,guidata(hObject)

这个问题是在之后出现的。