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