Learning Objectives Students Will Be Able To 1 Correctly Use An Analytical Balance To Measure Mass And Calculate Th 1 (55.37 KiB) Viewed 39 times
Learning Objectives: Students will be able to... 1. Correctly use an analytical balance to measure mass and calculate the mean, standard deviation, and relative standard deviation. 2. Analyze a set of measurements and determine if a suspected value should be kept or rejected to improve precision. 1. Mass of Pennies (20pts) 1. 6. Q-Test Determination 2. 7. 6. Gap 5. Value of suspect datum 7. Range Q-Test Data Sheet 3. 2. Total mass of 10 pennies (added from above) 3. Mass of 10 pennies (stacked together, and placed in the center of balance) 8. 4. Mass of 10 pennies spread out on pan (measured together) 8. Q calculated 9. Is it okay to reject this value? 10. Justify your answer for #9 here. (5pts) Sample Number: 4. 9. 5. 10. (2pts) (5pts) (5pts) (5pts) (5pts) (5pts) (5pts) (5pts) (5pts)
1. Determine the average, standard deviation, and relative standard deviation of your data (if you determined a data point should be rejected, then do not include it in your calculations). Show your work to receive credit. Average Standard Deviation Relative Standard Deviation (5pts) (5pts) (5pts) 2. Given the accepted mass of a U.S. penny is 2.5 g, calculate the %error and comment on the accuracy and precision of your data.(15 pts) 3. Provide an explanation for any discrepancy you find in lines 2 through 4 of your data sheet.(3 pts)
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