Audience measurement

Experiment 2: Aim: In this experiment you will determine the mass of a single drop of water by a graphical method. You will evaluate its uncertainty. Data: Table 1: Number of Drops: Mass of Beaker + drops/g (0.01g) 1 2.36 g 2 2.38 g 3 2.40 g 4 2.44 g 5 2.46 g 6 2.48 g 7 2.50 g Chart 1: Analysis: The mass of 1 drop of water is 0.4g. By taking the total mass and dividing it by the number of drops we can figure out the average mass of a drop of water. However the number of drops should…

and learning how to calculate error in an experiment when using lab equipment that involves measurement, since measurement is not always precise. A-2. Tell the reader the subject of the experiment and what the key experimental variables are. • The subject of the experiment is to practice and learn how to use some of the laboratory equipment (i.e. pipette, graduated cylinder, etc) and understand why measurement is not always precise and how to calculate errors. • The independent variables are…

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…

Discussion: Water was transferred from burettes and pipettes to a beaker, in order to see how accurate and precise these instruments would be. The displacement of the burette would be the measured volume of the water. Similarly, the water from the 5.00mL or 10.00mL pipette was transferred to a beaker. The beaker w/ water mass and the initial mass of the beaker was subtracted to obtain the grams of water in the beaker. Using the temperature of the water, the density could be found, allowing…

important activities of science is measurement. Measurement is a means of quantifying properties for identification. For example, density is the relationship between the mass and volume of a pure substance. One could determine if a piece of yellow metal is gold by determining its density. Measurement allows scientists to make comparisons. Measurement also provides a means by which scientists can judge the reproducibility of an experimental procedure. However, measurement is not an activity that…

In the field of economics, there are many measurements that attempt to quantify the economic wellbeing of an area. Many of which are used like a scorecard in order to try to improve upon itself. However, these measurements, as well as they quantify variable data, they are not without their shortcoming on how they gather their data. Indicators such as unemployment rate, inflation and GDP are vulnerable to misrepresenting the economic climate through issues revolving around how their information…

Test-retest reliability can be a useful assessment for a survey instrument. “Test-retest reliability provides information on how consistent a measure is when it is administered twice in a relatively short time frame. The appropriate length of that time frame will vary with both the instrument and the target population” (Krysik & Finn, 2013, p.266). In addition, the interval needs to be extended so that the subject cannot recall the answers and short enough to make sure that no changes occur in…

A constant question to go through a student’s mind is do grades really matter? The often happens when times get tough and grades are the main reason why students get stressed. Most parents think that grades are the key towards an accomplished future overall. Do grades really determine our future? Should we stress them more? Is this a proficient system? First off everyone knows that good grades are key to a successful future. In high school, the SAT is a big test that can determine whether you…

controlled conditions indoors and the sit and reach test is a field based tests though it can be performed indoors too. When testing the validity of the sit and reach test it is hard to be accurate with the results because other factors such as the measurement or the individual’s arm length can play a vital role when it comes to the validity. If the performer isn’t able to get the same results when performing the same test then the validity of the results is not accurate, where as if we were…

The article, When Nothing Is Sure, All Things Are Possible was written by Dr. Deborah D. Canter. The main purpose of this article was for readers to understand “dietetic genealogy”. Dietetic genealogy is the study of dietetics background tracing all history related to the profession. Overall, Dr. Canter’s article was very informative. The profound information regarding historical dietetic information was the most interesting factor. Dr. Canter touched bases on each decade of the 20th century and…