Observation: I am in the lab timing how long it takes to boil a 100 mL of water in a beaker over a Bunsen burner observe it takes 5:15 seconds to boil the water. I want to get the most accurate answer possible so I repeat the test again make sure everything is the same. This time it takes me 7:05 minutes to boil the water. I think this is unusual so I repeat the excitement a third time and it takes 5:20 minutes. What could we infer about the difference in the times observed?​