Measurement

Standardized Testing Is a Flawed Measurement Standardize testing fails at its one and only job. The ACT and SAT are standardized test, which are taking by high schooler’s as a requirement for college acceptance. Chiefly, the testing evaluates the primary subjects, including math, science, reading and writing. However, the testing material is fashioned by the financially-driven testing business, that is a multi-billion-dollar industry. No surprisingly, the testing industry charges…

Part #1.- Adian and I created a carrier for two Ping-Pong balls that look like pair of glasses. To make this model we used four rectangular prisms and a cube. We used two long and skinny rectangular prisms to make the two temples of the glasses, and we used two rectangular prisms to make the two lenses. Then, we made a cube to be the bridge of the pair of glasses. We selected these shapes because when put together they resemble a pair of glasses, and we were familiar with the shapes. We also…

Purpose: To use Parallax and triangulation to measure the indirect distance between two points. Hypothesis: If a long distance is measured using triangulation then it will produce an accurate measurement. Materials: 1. Protractor 2. Ruler 3. Tape measure 4. Table or desk 5. Paper 6. Pencil 7. Masking tape Procedure: 1. Gather all of your materials 2. Clear off your table or desk 3. Place an object at one end of the desk (image A). Using masking tape, label this point C. 4. From the end…

under a torsional load. The device will also need to collect data and calculate the angle of twist of the sample. A significant part of the device design is the data acquisition and angle of twist measurement. The purpose of this tech memo is to research possible options for data acquisition and measurement of the angle of twist that can be used in the design of…

important for professionals who use psychological testing. With that being said, the method attributes the consistency of the test measurements and excludes chance and nonessential factors in the outcome (p. 89). On the other hand, Hays defines that validity compromises the relevant and applicable inferences that are made by the instrument. In fact, these sales of measurements are like a variety of tools…

Purpose The purpose of the lab is to design an experiment to verify the spring constant for an unknown spring, also known as k, how much a spring resists change (compression or expansion). We used a method changing a mass and measured the change in x. Theory Free Body Diagram a=0 Legend: ¬¬ a-acceleration Sp-Spring N-Normal S-Surface E-Earth C-Cart G-Gravity y- Y-Component x- X-Component Mathematical Model Basic Equations: Force Equation…

How was Avogadro’s number determined? What are the evidence of international co-operation and evidences used to support the value of Avogadro’s hypothesis (numer)? What is a hypothesis? It is a proposed explanation for a phenomenon, which can be described as ‘provisional'. However, a hypothesis cannot be identified as a prediction; it is a priority for it to allow people to make predictions of experiments that can be tested. If the results from this experiment are coherent with the prediction…

Outgassing of carbon dioxide (CO2) from inland waters has been estimated to offset approximately 20% of net uptake of carbon into the terrestrial biosphere. However, this calculation is based on estimates of source strength at the air-water interface that is highly uncertain [Ciais et al., 2013]. One of the largest unknowns is the accuracy and precision of freshwater partial pressure of CO2 (pCO2) estimates. To better understand observational uncertainty in CO2 flux from inland waters, here we…

Reliability and Validity of Stress and Coping Styles Measurement Although extensive research has been conducted to analyze the factors influencing hopelessness depression (HD), there has been lesser research focused on the factors contributing to HD in adolescence. In “Daily stress and coping styles in adolescent hopelessness depression: Moderating effects of gender,” Rodriguez-Naranjo and Caño aimed to link daily stress and coping styles as factors contributing to HD in adolescence.…

that reliability is the characteristic of reproducibility and consistency of the results of a measurement step. There are different types of test validity and reliability, for example, content validity, predictive validity, test-retest reliability and inter-observer reliability. For the test-retest reliability, the reliability of a research can be tested by managing the same procedure of measurement again to the same participants (Polgar, S. and Thomas, S.A., 2013). These two results should…