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Post-lab 1-solutions

# Post-lab 1-solutions - gonzales(pag757 Post-lab 1...

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gonzales (pag757) – Post-lab 1 – Lyon – (52635) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. This post-lab 1 assignment is due by your next lecture at 8AM. The questions cover ex- periment 1. 001 (part 1 of 2) 10.0 points Can a measurement be precise but inaccu- rate? 1. No, precision and accuracy are the same thing 2. Yes; accuracy is a tradeoff for precision 3. Yes, if the values are close together but not near the true value correct 4. No, if the data is precise it must also be accurate Explanation: 002 (part 2 of 2) 10.0 points Can a measurement be accurate but impre- cise? 1. Yes, if the values are scattered, but aver- age to the true value correct 2. No, if the data is accurate it must also be precise 3. Yes; precision is a tradeoff for accuracy 4. No, precision and accuracy are the same thing Explanation: 003 (part 1 of 4) 10.0 points Determine the number of significant digits in 5 . 12 × 10 - 6 . Correct answer: 3. Explanation: When a number is written in scientific no- tation, all the digits in the coefficient are sig- nificant.

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Post-lab 1-solutions - gonzales(pag757 Post-lab 1...

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