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 smaller standard deviation.
that students data has a larger standard deviation.
that student found a higher average concentration.
that student has fewer significant figures reported in their average.

Explanation:

Step1: Understand precision concept

Precision is related to spread of data.

Step2: Compare standard - deviations

Student A has $\pm0.05$ BPM, Student B has $\pm2$ BPM. Smaller $\pm$ value means less spread. So Student A is more precise.

Answer:

that student's data has a smaller standard deviation.