【Daily Question】9.26 Reply +2； For +3~8
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This post was last edited by zjp on 2015-9-27 at 18:04. In order to increase the popularity of the chemical analysis section, the previous 【Weekly Topic】 activity has been replaced with a 【Daily Question】 activity; this aims to foster active technical exchanges while also providing members with financial rewards. 【Daily Question】 (Single-choice question) Three people analyzed the same sample using the same method, and the results obtained were: Person A: 31.27%, 31.26%, 31.28% ； B: 31.17%, 31.22%, 31.21% ； C: 31.32%, 31.28%, 31.30%. Then the order of precision for persons A, B, and C is ( ). A. A > C > B B. A > B > C C. B > A > C D. C > A > B Please reply with your answer; participating in the quiz earns +2 wealth points. Those who get all answers correct will receive an additional +3 to +8 wealth points. Extra rewards will be given for thorough analyses and explanations of the questions or answers, or for detailed calculation processes. If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. Note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation.
This post was last edited by wfs_bipt2014 on 2015-9-26 08:31. Three people analyzed the same sample using the same method, and the results obtained were: Person A: 31.27%, 31.26%, 31.28%； B: 31.17%, 31.22%, 31.21% ； C: 31.32%, 31.28%, 31.30%. Then the order of precision for persons A, B, and C is (B). A. A > C > B B. A > B > C C. B > A > C D. C > A > B
For the analysis of the same sample by the three individuals using the same method, the results obtained were: Person A: 31.27%, 31.26%, 31.28%； B: 31.17%, 31.22%, 31.21% ； C: 31.32%, 31.28%, 31.30%. Then the order of precision for persons A, B, and C is (A).
This post was last edited by ylb913 on 2015-9-26 09:00. A: A > C > B. Average deviations: A – 31.27, 31.26, 31.28, 31.27; deviation from average – 0.01, -0.01. B – 31.17, 31.22, 31.21, 31.20; deviation from average – 0.03, -0.02, -0.01. C – 31.32, 31.28, 31.33, 1.3; deviation from average – 0.02, 0.02, 0
For the analysis of the same sample by the three individuals using the same method, the results obtained were: Person A: 31.27%, 31.26%, 31.28%； B: 31.17%, 31.22%, 31.21% ； C: 31.32%, 31.28%, 31.30%. Then the order of precision for persons A, B, and C is (A). A. A > C > B B. A > B > C C. B > A > C D. C > A > B
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A. A > C > B .........................................
For the analysis of the same sample by the three individuals using the same method, the results obtained were: Person A: 31.27%, 31.26%, 31.28%； B: 31.17%, 31.22%, 31.21% ； C: 31.32%, 31.28%, 31.30%. Then the order of precision for persons A, B, and C is (A).