Time for 20 oscillations of a pendulum is measured as `t_1=39.6s`,`t_2=39.9` and `t_3=39.5s`. What is the precision in the measurements ? What is the accuracy of the measurement ?

Time for 20 oscillations of a pendulum is measured as t_1 = 39.6 s ,t_2 = 39.9s , t_3 = 39.5s , What is the precision in the measurements ? What is the accuracy of the measurement ?

Time for 20 oscillations of a pendulum is measured as t_1 = 39.6 s , t_2 = 39.9 s , t_3 = 39.5. What is the precision in the measurements ? What is the accuracy of the measurement ?

Time for 20 oscillations of a pendulum is measured as t_1 = 39.6 s , t_2 = 39.9 s , t_3 = 39.5. What is the precision in the measurements ? What is the accuracy of the measurement ?

Time for 20 oscillations of a pendulum is measured as t_(1)= 39.6 s, t_(2) = 39.9 s and t_(3) = 39.5 s . What is the precision in the measurements ? What is the accuracy of the measurement ?

Three measurements of the time for 20 oscillations of a pendulum give t_1 = 39.6s, t_2 39.9s and t_3 = 39.5s . The precision in the measurement is

Three measurment of the time for 20 oscillations of a pendulum give t_1 = 39.6 s, t_2 = 39.9 s and t_3 = 39.5s . The accuracy in the measument, is