Astudent uses a stopwatch to measure the period of the pendulum of the beverly clock in the corridor. his measurements are: (a) 13.54is (b) 13.44 s (c) 13.89 s (d) 13.41 s (e) 13.17s (f) 13.22 s . calculate his best estimate of the period calculate the associated error .explain the assumptions behind your estimation of the error

Reading is close to (b) 13.44 which is the best estimate of the period

Associated error,

Given:

Solution:

1.The best estimate of the period can be calculated by the mean of the measurements and the one closest to the mean is the best estimate of the measurement:

It is close to 13.44 s

2. Associated error is given by:

where

n = a, b,......, e

Now,

Mean Absolute Error,

3. The assumption behind the estimation is population is considered to distributed normally.

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i just did this and got a 100.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y