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Post-lab 1 Measurement-solutions

# Post-lab 1 Measurement-solutions - choudhury(fac489...

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choudhury (fac489) – Post-lab 1 Measurement – lyon – (51155) 1 This print-out should have 23 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001(part1of4)10.0points Which of the following is the correct definition for ”random error”? 1. Occurs from minor variations in the quan- tities measured due to the limitations of the measuring process itself. correct 2. Error caused by committing a personal fault. 3. Is random. 4. Error of the same magnitude and in the same direction each time the measurement is made. Explanation: 002(part2of4)10.0points Which of the following is the correct definition for ”gross error”? 1. Error of the same magnitude and in the same direction each time the measurement is made. 2. Occurs from minor variations in the quan- tities measured due to the limitations of the measuring process itself. 3. Error caused by committing a personal fault. correct 4. Error that can reduce the accuracy of the measurement, but the precision can still be good. Explanation: 003(part3of4)10.0points Which of the following is the correct definition for accuracy? 1. Agreement between two or more measure- ments that have been carried out in exactly the same fashion. 2. The extent to which a measured value agrees with the true value of the quantity measured. correct 3. Is an intensive property. 4. The overall mean value of the data. Explanation: 004(part4of4)10.0points Which of the following is the correct definition for precision?

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