# Measurement Essays

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Physics Coursework 1.1(a) Discuss why metric and SI system is better to use in measurement. Explain and list at least 6 physical quantities scientists use in measurements. There are several reasons as to why using the Metric System and SI Units are better to use. Each measurement has only one unit of measure regardless of the size which makes it a lot simpler to understand. Another factor that makes the metric system a better system to use is that the units use the same conversion, for example, 10

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efficiency), but no concrete means of measuring. Finally, 7.b wants to aid the developing community, and yet, since it requires only the building and expanding of infrastructure and technology, there is no definite end-goal and thus no easy measurement

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and physiology, it is a standard assumption to claim that there is a distinct correlation between an individual’s height and wingspan. Wingspan can be defined as the extent across a person’s arms from fingertip to fingertip, while height in the measurement from someone’s feet to the top of their head. The typical human body has a height that matches a person’s wingspan. For instance, if you are five foot tall, you are assumed to have a wingspan of five feet. The correlation between height and wingspan

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For example, if I use the measurement twice (e.g. take a test twice) would my scores be the same? Reliability focuses on the consistency of the measurement. If a measurement is reliable you should get the same results if you repeat it. With any measurement the score you get is the observed score. This score is a combination of the true score and error score. Researchers would of course like to eliminate or at least minimize the error score. Four sources of measurement error include: (i) Subjects

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Brittney Ingraham BADM 520 Quiz #4 October 24th 2015 1) What are the main criteria for evaluating measure validity? There are 5 different types of validity that are used for evaluating measure. The first criterion is making sure the measure has face validity. Face validity of the measure means that it accurately describes the concept being studied. An easy way to think about this if you make a bakery, you want people to walk in and know it’s a bakery; you cannot sell cars at your bakery and expect

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and let the spring come to rest. After that, I pulled the spring down 10cm and released. I recorded the point at which the spring’s rebound stopped. I repeated this step two more times. I recorded the information on a chart. I then averaged these measurements and recorded it on the chart. Next, I took a 100g weight and placed it on the end of the spring. I let the spring come to rest. After that, I pulled the spring down 10cm and released it. I recorded the point at which the spring’s rebound stopped

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instrument” (LoBiondo-Wood & Haber, 2014). An example of reliability in research would be weighing a person five times on the same scale and receiving consistent weighs each time. 2. Validity Validity is defined as “determination of whether a measurement instrument actually measures what it is purported to measure” (LoBiondo- Wood & Haber, 2014). An example of validity is weighing a person five times on the same scale and receiving the exact weigh each

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Franklin Bobbit coined a term, Social Efficiency, that made educators learn and use scientific techniques of production in the curriculum. This would be the base for enhancing the learning of students to become functioning members of society. This essay examines the important features of social efficiency, the analogy of school, historical context of social efficiency, and the importance of evaluation; as well as, the impact it has made in American schooling. One important feature of social efficiency

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Activity 3 (Individual and Group) US12444 SO1 AC1-7; EEK2, 3 Estimate, measure and calculate physical quantities to solve problems in practical situations: 1. John decides to double-check his estimated measurement before he buys the material and uses his tape measure to accurately measure the width of the window. He determines that the window is 2,2 m wide. a. How many metres of material does he need to buy? b. How much will the material cost? 2. Mr. Tshabalala has just finished building

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Objective: The goal of this experiment is to determine the relationship between position (x) and time (t). The method that we took to construct this experiment was timing the amount of seconds the buggy took to get from one end point to the other. We are measuring how the time in which the buggy moves affects the position in which the bug is at. Materials: • Timer • 1 buggy • 2 meter sticks • Tape • Tape

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following items, what did you find most challenging in making the measurement and how did that challenge affect the accuracy of the measurement? a) Length of the table b) Height of your partner c) Thickness of your finger A. We found that measuring the length of the table was difficult because it was longer than the two-meter stick. To measure the table we used the two-meter stick and a meter stick together. Overall I believe the measurement was slightly less accurate because we had to check three points

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Schools and teachers assess students in numerous methods, for a diversity of reasons – ranging from extensive classifications of judging, sorting and ranking, to more subtle explanations, determining students’ needs and level of understanding. Educators have distinguished a very strong difference concerning summative assessment and formative assessment; however the distinction is believed to be modified between how data is generated and how assessments are used. This paper will focus on formative

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“... a mind needs books as a sword needs a whetstone, if it is to keep its edge” (Tyrion Lannister). Set in the Medieval Ages, A Game of Thrones written by George R. R. Martin is an engaging and intriguing battle for the iron throne. Ned Stark, lord of Winterfell and Hand of the king, battles endlessly to drive sense into the, Robert Baratheon king of the seven kingdoms and outmaneuver Robert’s wife Cersei. While Ned is in the capital with his daughters Arya and Sansa, his oldest son, Robb rules

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Self expression is a term many people use. The meaning of it is how you show your true self around people expressing thoughts, feelings, and ideas. Many of it can be seen through art, writing, music, and dance. People show themselves with many different expressions. It can be any type of art and even writing. Some people have art when it come to make up they might be really good at making other people look better than they already do or even by how they write. For example some people will right all

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colleagues (2007) discuss the need to carefully select and train observers since this is necessary for the collection of accurate and trustworthy data. Potential observers should be interviewed to determine their level of experience with observation, measurement, and data collection since if any part of the intervention is not implemented, measured, or recorded correctly, the intervention will be inaccurate and unreliable. Once an observer or observers have been selected, training on recording the dimension

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Ernest Ravenstein’s laws of migration states that migration is closely connected with "push-pull" factors such as low wages, high unemployment rates, and lack of health care and pull factors such as: high wages, low unemployment incline people towards leaving their original places of residence. In other words, the primary cause for migration is better external economic opportunities (Daugherty and Kammeyer 1995, Van den Berg H. 2009). At present, the dominant theory in explaining causes of migration

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Study area Samples of seaweeds were collected seasonally between autumn 2012 and summer 2013 from the intertidal zone of Safaga (26o46ʹN, 33o56ʹE), Hurghada (27o12ʹN, 33o50ʹE) and Al-Quseir (26o5ʹN, 34o17ʹE) along the coast of the Red Sea, Egypt. Water analysis Surface water samples were collected seasonally, from the same areas and during the same time of sampling of macroalgae and all variables were measured in triplicate for each sample. Water temperature was measured in situ. Before analysis

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In the experiment “Losing Your Marbles” we learned about momentum and conservation. We learned by dropping a marble down a ramp and timing how long it took it to get to a certain distance. Momentum means the mass, in grams, multiplied by the velocity, in cm/s. Or P= m x v. Conservation means something "stays the same." In this case it means that the momentum after a collision between marbles is the same as the momentum before the collision. In part one of this experiment we dropped a regular sized

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\section{Facility Static and Dynamic Control}\label{Calibr} The facility calibration is the transfer function between the oscillating gauge pressure $P_C(t)$ in the chamber (described in ~\autoref{Sub31}) and the liquid flow rate $q(t)$ in the distributing channel, i.e. the test section. Due to practical difficulties in measuring $q(t)$ within the thin channel, and being the flow laminar, this transfer function was derived analytically and validated numerically as reported in ~\autoref{Sub32} and

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The independent variable for this experiment was the power of microwave radiation. The dependent variable was the cumulative plant height in centimeters. The constants in this experiment were the microwave, microwave duration, amount of sunlight, type of soil, amount of soil, amount of water, environment (same air quality, temperature, etc.), grass seed, number of grass seeds per cup, number of trials per level of I.V. and cups. The control in this experiment was 0 seconds on 100W. For this experiment

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