Dawn recorded her measurement of the mass of a sample of leaves as 13 grams (g). Four of her classmates measured the same sample and recorded the following data: 30 g, 31 g, 29 g, and 30 g. All students used the same balance during the same class period. Dawn’s data are most likely inconsistent due to

The classmates’ measurements cluster closely around 30 g: 29 g, 30 g, and 31 g. Dawn’s measurement of 13 g is far from that group, so it is most likely due to human error, such as misreading or recording the balance. The shared balance is unlikely to be broken because the other students obtained consistent results.

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