Question

Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook is shown in the table below.

Suppose a later and more reliable measurement gives 0.930s for the period of the same star. Decide which of the earlier measurements was the most accurate, and which was the most precise.

A between 0.945 and 0.955s

B 0.928s +/- 0.002s

C 0.91s
D 0.940s +/- 0.10%

Answer 1

Four research teams measured the rotation period of a newly detected neutron star and gave the values as

1. between 0.945 and 0.955s
2. 0.928s +/- 0.002s
3. 0.91s
4. 0.940s +/- 0.10%                        

Later a researcher found that 0.930 seconds is more reliable measurement for the same star (neutron star)

so out of this four researcher the second researcher that is with 0.928 second and +/- 0.002 seconds is more closely to the value of reliable measurements 0.930 seconds and therefore , it is the most accurate and precise one.