Getting a Error in handles

I keep getting a handles error in this code why can anyone help i am new to matlab gui

function Run_Callback(hObject, eventdata, handles)
  global runningAverage;
  global datas;

     set(handles.text4,'Visible','on');
     set(handles.text5,'Visible','on');
     set(handles.text6,'Visible','on');

      set(handles.Median,'String',num2str(Median(data)));
     set(handles.Mean,'String',Mean(data));
     set(handles.Mode,'String',Mode(data));

     set(handles.Median,'Visible','on');
     set(handles.Mean,'Visible','on');
     set(handles.Mode,'Visible','on');

Answer 1

[Walter Roberson]

You have several statements that operate upon "data", but you have no obvious definition for "data" in scope. You do have a definition for "datas" in your global statement, but "data" and "datas" are not the same variable.