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.

Human error We can most probably assume that there was the presence of error. Error comes in two types with regards to measurement. The systematic errors and random errors. However, this is either caused by human errors. Human errors are a natural phenomenon that occurs either because of inexperience in using a measuring device or the unconscious behaviors and modifications done. In this case, we can assume Dawn was hypothetically inept and wasn’t properly oriented to use the measuring device.