Essays on Mean Value

Introduction

Job Attitudes remains to be a critical element in any setting to assess the employee perception, feeling and commitment to the organization. Organizations undertake assessments to assess job attitudes in order to understand their perception regarding the job. WS Inc. The company has undergoing higher turnover in the past. There are relative changes that are implemented by the organization to enhance employee’s satisfaction. In this report, analysis of job attitude working at WS Inc. The company is determined. For this data is gathered through survey questionnaire and analyzed using quantitative analysis techniques to summarize job attitudes of the ...

Company 1

E-mini S&P 500 Index Futures, Se (Yahoo! Finance, 2016) Mean Price: 2153.194 Median Price: 2163.25 Company 2 Nasdaq Composite (Yahoo! Finance, 2016) Mean Price: 5070.243 Median Price: 5081.915 Mean vs Median Mean and Median are both statistical parameters which describes a certain set of data. Though they are both situated in the middle value of a data set, their actual values are different due to certain reasons. First, mean is the average of the whole data set, meaning, when each of the data is added up and then divided with the total number of data, then mean is obtained. ...

Research Question

The questions about health cannot be answered basing on knowledge and experience only. In other words, physiology, biochemistry and clinical experience are not enough to make conclusions about the factors that cause changes in human body. However, the medical science requires answers to numerous credible questions. The answers are obtained through statistical analysis of the vast datasets with patients’ social and medical characteristics. The larger the dataset, the more reliable are the conclusions. The dataset used for the study is based on 17 variables with 5209 observations. Therefore, the sample data can be approximated to the population data. The ...

Assignment 1

Assignment 1

The mean value of the price calculates: X=i=1nxin, where xi is the value of the household in state i; n is the quantity of states.

The standard deviation calculates:

s=i=1n(xi-X)2n-1.

The confidence interval calculates:

CI=t(0.95;n-1)∙sn, Where t(0.95;n-1) the t-value from the table. For the national household, t0.95;50=2.01, for the states where the company wants to open the new locations: t0.95;9=2.262.

Data for the Ten States

Median is obtained by arranging the values in ascending order and taking the central value; for the set with 10 value the median is the mean of 5th and 6th values: 112900 128400 138800 154900 158100 ...

In this case study, I as a manager of a bottling company should perform statistical analysis of the average amount of soda in the bottles produced by this company. There are thirty observations were pulled and the volume of soda was recorded for each bottle. Step #1. Calculating the descriptive statistics (mean, median and standard deviation). This method (descriptive statistics) is used for general review and description of the data. It usually is the initial step in the analysis of quantitative data and the use of other statistical procedures. The features of the sample data can serve as a ...

Quality assurance is an mportant part of the production and a guard of company reputation. Quality control engineers work all year round, yet their role is of particular significance when the claims of inappropriate quality appear. The current problem is associated with lack of soda in soda bottles. The company advertises 16 ounces; however, there are accusations that there are less soda in the bottles. The quality engineer has to run an investigation. Therefore, the plan of the research is as follow. It is definitely impossible to test all the produced bottles. The statistical methods address the issue. The ...

ABSTRACT

This study compares the use of the use of Kinesio Taping® (KT) versus use of Sham Taping over the erector spine muscles on performance of the Biering Sorensen Test in normal, healthy young adults. Fatigue of muscle of the trunk extensor plays a very important role in chronic Low Back Pain (LBP). Physiology behind this fatigue is complex and has not been fully understood. Use of Kinesio Taping supports mobility of damaged structures and at the same time influences the mechanism at which muscle erector muscles perform in relation to fatigue. Sham Taping test consists of measuring total amount ...

The confidence interval is used to ensure accuracy of mean perception. It shows the interval of the mean value. The confidence interval calculates: ∆=t(n-1;0.05)sn, where ∆ is the half-width of the confidence interval, n is the number of measurements, t(n-1;0.05) is the t-value for n-1 degrees of freedom at 0.05 significance level, s is the standard deviation (Johnson & Kuby, 2012). The confidence interval is presented as Mean ± ∆. The percentage of the confidence interval refers to certainty of the mean: 95% confidence interval indicates that 95% of the population is within the interval, and 5% are ...

Abstract

The experiment involved the investigation of the young’s modulus of different beams made from different materials. The beams that were used for the test were steel, aluminum and timber. The experiment involved placing of the beams on the measurement machine shown below and addition of loads at the center of the beam. The loads were then varied across the beams while investigating the relationship that existed between the beams when different loads were added. The height, width, and the respective deflections were therefore recorded for analysis. The dial gauge was used to measure the deflection of the beam ...

Final Project

Final Project

Introduction

Statistical analysis is an integral part of the clinical trial and nursing. The purpose of this paper is to demonstrate the understanding the essence of the various methods of statistical processing of medical data, without going into details of mathematical calculations. We consider the most useful and popular types of analysis of the nursing, clinical and experimental medicine.

There are a number of indicators are included in the term of "descriptive statistics". They characterize the sample as a whole. Each researcher knows such concept as average (mean) value, which is calculated by dividing the sum of the ...

Abstract

The results indicated the significant difference in the duration between Kinesio tape and control group. There is also a significant difference in the duration between sham tape and control group. The difference between Kinesio tape and sham tape remains insignificant. There is a significant interaction of such factors as duration and type of taping, indicated by the interaction plots of estimated marginal means of condition.

30 individuals have participated in this study. The mean value of height is 168.46 cm with a standard deviation of 11.46 cm. The mean weight is 69.33 kg with a standard deviation of 13.96 ...

Abstract

In this paper, we have studied the different types of information perception, such as color identification and reading speed. The research question is: “Is reading harder than identifying colors?” In order to investigate this problem, a quantitative study of the different levels of interference of reading or color identification in the Stroop test was conducted. Research has demonstrated that when forced to perform an automated task, such as read the word ‘green’, it is more difficult when the word is printed in an alternative color, such as red, than when it is the same color as the word with ...