It could be that group 3 was given a different sample entirely.
<h3>Mass measurement</h3>
The class was divided into 4 groups, whereas, only 3 samples were to be weighed and compared.
Thus, it could be that group 3 was given another sample that is entirely different from the other groups.
If group 3 was actually given one of the 3 samples, it means that they made a mistake during weighing.
More on weighing can be found here: brainly.com/question/13730160
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