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    Accuracy and Precision

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    Accuracy and Precision Laura Norwood CHM/110 October 11‚ 2012 Dr. Grant W.Wangila Accuracy and Precision Chemistry is a vibrant part of society. When experiencing some of life’s simplest of pleasures‚ there is usually a process that has undergone different aspects of what a chemist studies every day. In the text for this course‚ the example of experiencing even a simple sunset can be related to chemistry. “Molecules in the air interact with light from the sun‚ scattering away the blue

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    Accuracy or Precision

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    Chemistry and Society Paper In everyday life‚ accuracy and precision are important. These two terms are often interchanged freely‚ but these terms have key differences. Many businesses require both accurate and precise measurements to stay in business. Accuracy and Precision Accuracy refers to something that is consistent with a known value (Maze-Emery‚ 2009). Precision is the amount of detail something provides (“accuracy/precision‚” 2005). A simple analogy is someone throwing darts at

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    Accuracy and precision both relate to the quality of a measure. However‚ the terms have separate meanings and should not be applied as an alternate for the other. The meaning of accuracy is the extent to which a given measurement agrees with the standard value for that measurement. The meaning of precision is the degree to which the correctness of a quantity is articulated. The difference between accuracy and precision is like playing a game of darts. There can have several outcomes by shooting three

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    Accuracy and Precision of Spitballs Problem: How far will the spitballs land from the target when shot at different distances? How far will the spitballs be from each other when shot from different distances? Hypothesis: I believe that the accuracy will be similar when shot at the same distance but the closer you get to the target the more accurate it will be. For precision I think they should not be that far apart because you should shoot them relatively close. Materials: The materials

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    A theodolite is a survey testing instrument used for measuring horizontal and vertical angles. A basic theodolite usually consists of a small sized telescope linked with mechanisms to measure horizontal and vertical angles. It has several moving parts and is quite heavy. The theodolite telescope is fixed within perpendicular axes- the vertical axis and the horizontal‚ or trunion‚ axis. The instrument is fixed on a base that can be rotated on a tripod by a leveling system. The angle to the desired

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    Erica Alonso Chemistry Honors 1 Mr. Cunningham 1.07 Accuracy and Precision Procedure Access the virtual lab and complete the experiments. Data • Below is the table that you will complete for the virtual lab. Either type your results into this table or print the table from the virtual lab (it must be submitted to receive full credit for this assignment.) Part I: Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams) 26 25.6 26 Volume of liquid

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    Precision describes the closeness of results that have been obtained in exactly the same way while accuracy indicates the closeness of the measurement to its true value. This experiment was used to determine the accuracy and precision of different volumetric measuring devices‚ as well as determining the density of an unknown metal. This lab was to help understand the application to volumetric measurements. Part 1: First‚ the next-to-smallest beaker was cleaned‚ dried‚ and weighed on the scale

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    01.07 Accuracy and Precision: Balance Lab Worksheet Data * Below is the table that you will complete for the virtual lab. Either type your results into this table or print the table from the virtual lab (it must be submitted to receive full credit for this assigment.) * To print from the virtual lab. 1. Be sure the data table is viewable. 2. Right-click (PC) or Command-Click (Mac) on the table and select print. Part I: Density of Unknown Liquid | | Trial 1 | Trial

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    Experiment Density‚ AccuracyPrecision And Graphing OBJECTIVES 1. The determination of the density of water 2. A comparison of the accuracy and precision of a graduated cylinder and a pipet EXPERIMENTAL MATERIALS Part A A 50mL graduated cylinder A balance 50.0mL deionized water A rubber policeman Part B A 100mL beaker A 50mL graduated cylinder A volumetric pipet 120.0mL deionized water A thermometer A rubber policeman

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    Abstract- Expirement 1: PrecisionAccuracy‚ and Density Measurements This experience is intended to introduce the proper use of the most used laboratory equipments and glasswear that is come upon in the lab. As well‚ to determine the mass‚ volume and density of water by using various types of measuring glasswear‚ such as beakers‚ graduated cylinder‚ pipet‚ etc... The measurement of the density of water will determine the precision and accuracy of these measuring glasswear. Also‚ there will be a

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