(Science) Accuracy and Precision
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The document discusses percentage error and using it to calculate the accuracy of different student estimates of a liquid volume in a beaker, compared to a teacher's measurement with a graduated cylinder. It provides the estimates of 5 students and asks to calculate their percentage errors using the teacher's measurement as the accepted value. It also gives density measurements from 3 students over 5 trials and asks to analyze the accuracy and precision of the data and identify who committed the least error.
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(Science) Accuracy and Precision
- 2. is how close the measurements are to the true value.
- 3. is how successive measurements agree with each other
- 6. % error= /error/ = Accepted value experimental value −
- 7. 1. Different students in a class was asked to give their estimated volume of a liquid in a beaker. Student 1 give her estimate as 200 mL and 215 mL,190 mL, 195 mL and 230 mL for students 2,3,4, and 5, respectively . When the teacher poured the liquid into a graduated cylinder, she measured the volume as 208 mL. What is the percentage error of the estimated volumes from the beaker, taking the graduated cylinder measurement as the accepted value?
- 8. True Value = 1.20 g/cm 3 Trials Lyla Geneve Joacquin 1 0.98 g/cm 3 1.53 g/cm 3 1.25 g/cm 3 2 1.23 g/cm 3 2.00 g/cm 3 2.96 g/cm 3 3 1.02 g/cm 3 1.18 g/cm 3 2.65 g/cm 3 4 1.12 g/cm 3 1.92 g/cm 3 1.89 g/cm 3 5 0.83 g/cm 3 1.65 g/cm 3 2.76 g/cm 3
- 9. Describe the accuracy and precision of the given data. Among the students , who committed the least error? Explain your answer
- 10. Thank you for listening! Have a nice Day!