Identify the sampling,method.
You want to determine the number of text messages students at your school send in a month. You go to the cafeteria and ask every 4th student that walks in.
a- random
b- systemic
c- stratified
d-m none of these
My answer is none of the these because it's biased for only students that used the cafeteria.
3 answers
However, what if you assume that students who bring their lunch or just want to hang out use the cafeteria?
so are you saying it could be stratified?
It would be stratified if only one grade used the cafeteria at that time.