when t.test returns an error: data are essentially constant, when using t test what does error mean what is the error t.test.data are essentially constant how to use t.test in excel file what is the error that t.test returns for variables r how to return data are essentially constant error t.test returns the error how to test data are essentially constant what does t.test.return mean? what r value is an essentially constant what error does t test return when a t test is run, ___________ returns an error why do r tests return an essentially constant what is the error when it says a data is essentially constant what is an error of the t r when to use t.test.default in r why error when i use t.test when t.test is error what is the error r when you change a single character r.t.test returns the error