Measurement Scales If a researcher is going to use statistics properly, it is crucial to consider the kind of data about which descriptive statistics are to be calculated or to which will be applied some kind of statistical test. Statistical analysis, even simple analysis as counting, requires that each characteristic to be studied be assigned a unique value. Sometimes, especially in qualitative research with small samples, this value can be a word or symbol. For example, the interviewers could
Words: 320 - Pages: 2
stations on sea bottom or below surface and/or ice. The navigation system is based on a strap-down inertial measurement unit (SD-IMU) mounted on an underwater vehicle and assisted with auxiliary navigation sensors, such as Doppler velocity log (DVL), depth, and heading sensors. Range measurement transducers are additional auxiliary navigation sensors. Using the two range measurements, the proposed navigation system will be able to improve the performance of conventional IMU-DVL navigation
Words: 5905 - Pages: 24
which is a dimensionless quantity known as drag coefficient. Drag coefficient is a function of Reynolds number and is given by C_d= F_d/(1/2 ρ_L V^2 π D^2/4)………(5) The Reynolds number is defined as Re= (ρ_L VD)/μ………(6) Figure 1 These measurements will be required to construct relationship between Absolute and Relative uncertainties. Experimental Procedures For this lab we are measuring the Coefficient of drag for three different liquids; water, glycol and glycerin. Firstly we measure
Words: 1770 - Pages: 8
EXERCISE-11 1) What demographic variables were measured at least at the interval level of measurement Education is measured at the interval scales because the data is measured on specific intervals, and grades of education. 2) What statistics were used to describe the length of labor in this study? Were these appropriate? Length of Labor is measured in hours. It is s an appropriate measurement because the time measured is less than a 24 hours. 3) What other statistic could have been
Words: 1079 - Pages: 5
cylinders were measured on a balance scale to determine the mass, in grams, of each of the cylinders (Edwards, 2011). The diameter and height of the cylinders were measured in centimeters using a vernier caliper, which allows for a more accurate measure of the outer and inner diameters. In part I of the experiment, 6 aluminum cylinders were for mass, diameter, and height. A balance scale and a vernier caliper were used to obtain the appropriate measurements (Edwards, 2011). The volume of each
Words: 439 - Pages: 2
about a larger collection of data. There are other two classifications of statistics and they are qualitative and quantitative. When measurements cannot be measured on a regular numerical scale this is referred to as qualitative data. Qualitative data can only be classified into one of the groups of categories. When data is recorded on a naturally occurring numerical scale is quantitative data. Statistics plays a major role in business decision making. Many companies use statistics to determine whether
Words: 312 - Pages: 2
add the acid into it we would be able to tell when the end point comes because the colour will change. Qualitative and quantitative comparison: I think that quantitative technique is more important than qualitative for titration because if the measurements for titration and standard solution are not accurate and precise then then it can affect all of our result and conclusion can be completely different than the one expected. Qualitative on the other hand also plays important role but not as much
Words: 1022 - Pages: 5
samples (random being the key) of existing processes (measure the accuracy or the time taken to service insurance customers, essentially pick the process area to measure) to find the sample mean, and variance within the process. c) Post the measurement phase, come the execution phase where one finds out the changes that need to be made in the existing process to ensure that the accuracy stays within the specified control limits. Unlike in manufacturing, where it’s easy to distinguish what is
Words: 641 - Pages: 3
CConceptualization and Measurement in Criminology and Criminal Justice In chapter 3 of The Practice of Research in Criminology and Criminal Justice there are four areas of focus. They are concepts, measurement operations, evaluation of measures, and levels of measurement. We are going to address conceptualization by using substance abuse and related ideas as examples. For measurement, let us review first how measures of substance abuse have been created, utilizing procedures as available data
Words: 1228 - Pages: 5
Performance measures should be valid, so they measure all the relevant aspects of performance. These measures should also provide interrater and test-retest reliability, so that appraisals are consistent among raters and over time. Performance measurement systems should be able acceptable to the people who use them or receive feed-back from them. Finally, a performance measure should specifically tell employees what is expected of them and how they can meet those expectations. 2. Describe the
Words: 1389 - Pages: 6
