Question

quiz: pre - lab quiz - using excel for graphing
points possible: 1.00
opened: 09/01/2025 9:40am(cdt)
closes: 09/08/2025 9:40am(cdt)
question 7 of 9
suppose that 2 students count daphnia heartbeats multiple times, resulting in an average heartbeat of...
student a 196.7 ±.05 bpm
student b 200 ± 2 bpm
the more precise work was done by student a because
choose...
that students data has a larger standard deviation.
that student has fewer significant figures reported in their average.
that students data has a smaller standard deviation.
that student found a higher average concentration.

Explanation:

Precision is related to the spread of data. A smaller standard - deviation (± 0.05 for Student A vs ± 2 for Student B) indicates more precise measurements.

Answer:

that student's data has a smaller standard deviation.