Duante explains to Amanda that t-tests can be used to answer research questions such as "Do psychology students get better grades in statistics than business learners?" The key, he explains, is that t-tests compare two different groups. If what you want to know is whether two different groups of participants differ in terms of one thing, the t-test might be the answer. Of course, it also depends on what types of data you have. Amanda still looks confused. Types of data for the independent variable (called grouping variable in JASP) Types of data for the dependent variable This test is used to determine what type of relationship? Options: nominal, ordinal, interval, ratio (note: some boxes will have just 1 of these options, other boxes will have multiple for a correct response) t-test for independent samples