| If the true value for an experimental result is 6.23 and the results reported by three students X, Y and Z are: |
| X: 6.18 and 6.28 |
| Y: 6.20 and 6.023 |
| Z: 6.22 and 6.24 |
A) X precise, Y accurate, Z precise and accurate.
B) X precise and accurate, Y not precise, Z precise
C) Both X & Z precise & accurate, Y not precise.
D) Both X & Y neither precise nor accurate, Z both precise and accurate.
Correct Answer: D
Solution :
[d] Both Y and X are neither precise nor accurate as the two values in each of them are not close. With respect to X & Y, the values of Z are close & agree with the true value. Hence, both precise & accurate.
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