Level of measurement

11a, lab 1: Motion, Measurement and Statistics In the first lab we will investigate the motion of a ball rolling down an inclined plane. We will use this simple system to investigate the concept of systematic and random measurement uncertainties to understand how much we can trust a measurement. We will then compare the experimental outcome with theory. I. Ball on an inclined plane: Measuring motion We want to measure the motion of a ball that rolls down on an inclined plane…

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…

This week’s assignment asked the class to discuss the benefits of measuring health behaviors. Without the current health behavior measurement, they are several statics that warn against unhealthy behavior that wouldn’t have the data needed to provide critical data, needed to educate the population on harmful consequences. Let take smoking for instance, without the surveillance of smoker, organization like the CDC wouldn’t have the ability provide statics that show the health burden caused by…

There are three levels of measurement: nominal, ordinal, and ratio. Nominal level data is the lowest level of data and is qualitative (word oriented). Ordinal data are assigned numbers reflecting on the order of the relationship between the characters studied. Interval level data is a move from the qualitative scale to the quantitative scale – numbers (Walker, 2009). It also builds on ordinal data and shows an equal value between categories. There are also three measures of central tendency:…

instincts or past results. Six Sigma is highly measurement and data focused. It is difficult to measure the performance level of a service. In manufacturing industry “no defects per million” real data can be used. However, in service industry there is a great variability in data due to customer preferences, lack of tangible measurement tool of human behavior. In most cases four indicators are being used to measure the performance of a service industry: service level, service cost, customer…

other measuring tools.In this lab, we measured water from pipettes including volumetric and graduated pipettes, graduated cylinders, erlenmeyer flasks, and beakers to figure out the mass and density. These measurements were then used to calculate the percent error. We completed these measurements by measuring the volume of the pipettes in milliliters, the initial mass of the beaker without water in grams, and the final mass of the beaker with water in grams. We did this procedure again, and also…

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…

and higher unit restraint rate, will be linked to lower unit index scores. Variables The study included “Select unit-level nursing characteristics and processes known to be associated with nursing care quality were chosen from the NDNQI database for the Pressure Ulcer and Fall Rate Quality Composite Index validation process” (Boyle, Burman, 2013). In this study, the measurements were focused on pressure ulcer and fall risk rates based on different units and skill mixes. The conceptual…

Boots, he writes about the use of hand and laser measurement devices used at crime scenes. One hand held measurement method that Books writes about is a rolling measurement device. This type of device should be checked against a steel tape measure to compare over various distances. Boots states, "Probably one of the most commonly used devices is a good old-fashioned…

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…