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# A little of help please watch

1. Question:
A student used a digital stopwatch three time 10 oscillations of a pendulum. The timings were 13.52s, 13.64s and 13.58s
a) Calculate i the average time for 10 oscillations, ii the time period of the oscillations.
b) Estimate the accuracy of the timings, giving a reason for your estimate.

The problem i have is with part b. In maths to estimate is 2 sf.(my answer 1.4 to s.f)
if i give my estimate my answer how do i give a reason. I feel to give my estimate to 2 sf because it seems to be the standard in physics (I could be wrong)
but also knowing that gate timers and other forms of measuring time make be more effective than a stopwatch am i suppose to estimate the time on those and give it as my answer since it will be more accurate?

I just a bit confused and need a second opinion
2. For part b, I would say that the accuracy is since that is the greatest distance between the mean and a result ()

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