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 1Student 2Student 3Student 4- Performed the experiment once- Used the same area, same time of day, and same amount of seeds- Repeated the experiment 5 times- Used the same area, different time of day, and different amount of seeds- Repeated the experiment 2 times- Used the same area, different time of day, and different amount of seeds- Repeated the experiment 5 times- Used the same area, same time of day, and same amount of seedsWhich student is the most likely to have reproducible results?
Reproducible results are more likely when an experiment is repeated and other conditions are kept the same. Student 4 repeated the experiment 5 times while using the same area, time of day, and amount of seeds. Student 2 also repeated it 5 times, but changed the time of day and seed amount, making the results harder to compare reliably.
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