Answer:
Row 2 = 4.07
Row 3 = 6.03
Step-by-step explanation:
The prompt gives you the correct equation for calculating the average. For this question, it may make more sense to write the equation as follows:
Average Time = (Time Trial 1 + Time Trial 2 + Time Trial 3) / # of Trials
So, for a distance of 20 cm, the average time is...
Average Time = (4.11 + 4.03 + 4.06) / 3
= 12.2 / 3
= 4.07 s
For a distance of 30 cm, the average time is...
Average Time = (6.07 + 5.99 + 6.03) / 3
= 18.09 / 3
= 6.03 s