4 students did a survey to find the soda flavor 6th grade students prefer. The table below shows the method each student used to conduct the survey:
Student Method
Trey Asked 100 students @ random from 7 grade what their favorite soda flavor is.
Jesse Asked 100 6 grade students @ random what their favorite soda flavor is.
Nita Asked 100 8 grade students @ random what their favorite soda flavor is.
Ruben Asked 100 3rd grade students @ random what their favorite soda flavor is.
Which student's survey is most likely not biased?
Trey
Jesse
Nita
Ruben