PPT-Significant Figures Accuracy versus Precision

When taking scientific measurements the goals are to measure accurately and with precision Accuracy refers to how close a measured value is to the actual or real value Precision . What’s the Diff?. Accuracy. Accuracy: . How . closely a measurement matches true or actual values. To . be accurate only requires the true value (the . bulls eye. ) and one measurement (one arrow to hit . 2.3. A. What are Significant Figures?. The number of all certain digits in a measurement plus one estimated digit.. Example. 2.0 cm. 1. 0. 2. 3. 4. cm. 2 Significant figures. Examples. 1. 0. 2. 3. 4. Measurements, Accuracy and Errors. Vocabulary. Measurement magnitude quantitative. Qualitative precision accuracy. Parallax significant figures scientific notation. Length volume area. Constants electromagnetic spectrum . Using Significant Figures. S8CS3: . Students will have the computation and estimation skills necessary for analyzing data and following scientific explanations.. S8CS3d:.  Decide what degree of precision is adequate, and round off appropriately.. Accuracy vs. Precision. What is the difference?. Accuracy vs. Precision. Precision . accuracy. Exactness. Divisions on scale. Reproducibility. Uncertainty. Significant digits. Correctness. Calibration. Measuring with Precision. Defn: Those numbers that result from directly measuring an object. It shows the precision of the measurement.. Units must be included (no units no sd). The precision of the measurement depends upon the measuring instrument. 5700. 1. 2. 3. 4. Multiply. 843.5 * 21103. 17800380.5. 1.780 x 10. 8. 1.780 x 10. 7. 17800000. Which of the following instruments would give you the most accurate measurement?. Round to 3 significant digits.. The derailment on October 22, 1895 of the Granville-Paris Express that overran the buffer stop. The engine careened across almost 100 feet (30 meters) of the station concourse, crashed through a two-foot thick wall, shot across a terrace and sailed out of the station, plummeting onto the Place de Rennes 30 feet (10 meters) below where it stood on its nose. While all of the passengers on board the train survived, one woman on the street below was killed . …Matter is anything that occupies space.. The Six Levels . of Thought. Knowledge. Comprehension. Application. Analysis. Synthesis. Evaluation. “Success is a journey, not a destination.”. -Ben Sweetland. Chemistry is the study of the properties of . matter. and . changes. they undergo.. . It is central in all scientific studies.. It is essential in the understanding of nature; . What is . Matter. ?. 4.72006 s. 0.0003 km. 400 mL. 320.0 mg. How many significant figures are there in each of the following measurements? . 4.72006 . s . (6 significant figures). 0.0003 . km . (1 significant figure). 400 . CONTEXT. There are two . contexts precision . and accuracy apply to: sets of data, and measuring instruments.. In a set of data, those measures give an idea of the spread and “. ballpark. ” of the answer (final measurement).. Accuracy of a measurement:. An indication of how close the measurement is to the accepted value. Percentage difference can be calculated to give a quantitative indication of a measurement’s accuracy—the smaller the percentage difference, the greater the . with a . . 2016. Physical. Quantities. Physical Quantities. SI Units. Prefixes. Significant . figures . Scientific. Notation. Unit . Conversion. Uncertainty. Accuracy. . vs . Precision. Physics .