Answer :
Sarah's measurements are more precise but Felipe's average is more accurate.
Average of each student
The average of the trials performed the students is calculated as follows;
Sarah's average
= (7.96 g/cm³ + 8.05 g/cm³ + 7.92 g/cm³) / 3
= 7.98 g/cm³
Felipe's average
= (7.24 g/cm³ + 7.75 g/cm³ + 8.57 g/cm³) / 3
= 7.85 g/cm³
Thus, Felipe's average is more accurate.
Precision of the measurement
Sarah's measurement:
8.05 g/cm³ - 7.96 g/cm³ = 0.09
8.05 g/cm³ - 7.92 g/cm³ = 0.13
Felipe's measurement:
7.75 g/cm³ - 7.24 g/cm³ = 0.51
8.57 g/cm³ - 7.75 g/cm³ = 0.82
Thus, Sarah's measurement is more precise.
In conclusion, Sarah's measurements are more precise but Felipe's average is more accurate.
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