Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements.
Student Readings
(i) (ii)
A 3.01 2.99
B 3.05 2.95
(i) Results of both the students are neither accurate nor precise.
(ii) Results of student A are both precise and accurate.
(iii) Results of student B are neither precise nor accurate.
(iv) Results of student B are both precise and accurate.
Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements.
Student Readings
(i) (ii)
A 3.01 2.99
B 3.05 2.95
(i) Results of both the students are neither accurate nor precise.
(ii) Results of student A are both precise and accurate.
(iii) Results of student B are neither precise nor accurate.
(iv) Results of student B are both precise and accurate.
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Option (ii)
Average of readings of student A,
Average of student A =
Average of readings of student B,
Average of student B =
The correct reading is 3. For both A and B, the average value is close to the correct value. Thus, readings of both are accurate.
The readings of student A are also very close to each other and close to the average value. Thus, readings are precise. Also, the readings of student B are also very close to each other and close to the average value.
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