Q67 · CSIR-NET Chemistry, June 2012
Paper: CSIR-NET June 2012 · Subject: Physical Chemistry · Chapter: Data Analysis · Topic: Error Propagation · Marks: 2 · Difficulty: Medium
The data obtained from two sets of experiments A and B have the following characteristics | Experiment | A | B |
|---|
| Mean | 50 units | 100 units |
| Standard deviation | 2 units | 2 units |
(a)A is more precise than B
(b)A is less precise than B
(c)A and B are of the same precision
(d)Relative precision of A and B cannot be assessed
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Relative precision = s/mean: A 2/50 = 4 %, B 2/100 = 2 %; A is less precise than B.
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