This chart shows the experimental design of four students who are all observing what kind of bird seed birds tend to eat
more often
Student 1 Student 2 Student 3 Student 4
- Performed the - Repeated the Repeated the - Repeated the
experiment once
periments experiment 2 experiment 5
- Used the same times
times
times
area, same time - Used the same - Used the same - Used the same
of day, and same area, different area, different area, same time
amount of seeds time of day, and time of day, and of day, and same
different amount different amount amount of seeds
of seeds of seeds
Which student is the most likely to have reproducible results?
Student 1
Student 2
Student 3
Student 4