I'm learning SPSS t tests and I'm confused as where to put each variable since there are so many to choose from. My te4acher's example only had 2 options independent and dependent. However, this question has multiple, for example, there's pre and post body weights INDEPENDENT

Grouping_Variable

Mean_Heart_Rate

DEPENDENT

Pre_Body_Weight

Post_Body_Weight

I just want to make sure I understand why each variable goes where. Also, I tried moving the actual words dependent and it wouldn't let me even move it, it showed an error. The research question was "is there a statistical difference for mean heart rate between participants either exposed to a hot- or cold environment?"

Please advise. Thanks!