Statistics Essays

In regard to the ways of minimizing mistakes in research, the following strengths and weaknesses can be deducted. First, building a rapport with the respondent makes he/she feel freer to give honest answers. He/she may even give answers to sensitive questions. However, some respondents may be unresponsive irrespective of the rapport.

Based on the positive value of the gradient, when X increases, Y also increases. The equation of the line of best fit is given by Y=1.4954X+11.847 For, X=1 Y=1.4954(1)+11.847=13.3424

Physicians need evidence for both clinical practice and public health decision-making. Systematic reviews and clinical practice guidelines were developed for the best source of evidence to counter the outburst of medical literature, the lack of time that physicians have to review all the articles, and the time to critically appraise them and obtain the evidence they need for their questions.

The paper contain the question one to question fourteen where question thirteen and fourteen the collected exchange rates will be analyzed through graphs and variance analysis. If this rates fits regression models well, then selected will include only those explanatory variables that give details a significant degree of the variance.

Models and forecast based on statistical data from a probabilistic proposition which is tangible and which spells out the chance of the organization/business performing better than it currently does. It is easier to apply statistics and make decisions that are satisfying and which fit different scenarios and situations.

The experiment is designed to evaluate the capability of the test subject to recognize two comparable products. The name of the test subject in this experiment is Lavender and the two similar products tested and chosen by the test subject are Diet Coke and Coke, both from the Coca-Cola Company.

Distortion of statistical data and handling for a particular purpose that can be defined as fraud in some situations is perpetrated by people who are not statistics professional. Often, it is common for statistical information presented in magazine and newspaper to be exaggerated due to the sensational nature of these media.

The analysis starts with the formation of a hypothesis which is either rejected or not rejected after the calculations. The two tests are almost similar and one can be used in place of another. In this case study I am going to write about the application of the use of of z-test and t-test in comparing two means.

Survey shows that more moms are now reading nutritional labels, which is an indication that more of them are becoming more particular of the kind of food they serve their families. More mothers are also avoiding high fructose corn syrup, artificial dyes, sugar and other additives which are blamed for the rise in obesity among children.

Classify the following variables using the following criteria: quantitative or qualitative, discrete or continuous, nominal, ordinal or interval / reason: Examples

A random sample of prices of 6 houses was recorded 5 years ago, and another sample of the prices of other 6 houses in Geneva was recorded this.

Events can be independent if occurence of one of the events does not affect the probability of another occurring.

This paper provides an overview of the impact of Internet use on the amount spent to sleep among teenagers. The purpose was to examine the relationship between teenagers’ usage of the Internet and the amount of sleep. 50 teenage students were selected and quantitative data in regard to the amount of time they spend on the internet and sleeping was gathered.

The Human Resources Managers are the primary determinant of quality in research and higher education. Therefore, the university collaborates with this department to hence human potential both quantitatively and qualitatively.

Generally, the importance of probability can be seen in our everyday life, even though we don’t, at times appreciate its applicability but it is always there around the corner, waiting for us to utilize it. The use of probability has really helped me as the head basketball coach of an upper league division.

Since all of the observations i.e. 88 were utilized for analysis, hence no data point was missing. The range refers to the difference of highest and lowest value in a sample. In this case the range values listed for each

Basing on the graphs above, it is clearly evident that the following output and interpretation is related to Mann-Whitney U test results and it is indicated by the two distributions which have a

The p-value is given as 0.000 (a value less than 5% significance level), we therefore reject the null hypothesis and conclude that mother’s and

Recently, the movement of orders has not gone as planned, and there were a large number of complaints. Bud Owens, director of customer service, has completely redone the method of order handling. The

Sample statistics for the population surveyed in this study sought to identify factors leading to type II diabetes mellitus. The survey questionnaire involved identifying the sample perception of diabetes, whether it was a dangerous disease, the cause of diabetes, measures to be taken to prevent diabetes, dietary measures to prevent the disease, and the sample population perception of the category of people likely to develop type II diabetes.

n used instead of total value as the dependent variable since it is regarded as the average data on food, a measure of the food consumption of the population of a nation and it is particularly in comparison to other nations. Looking at the table below (regression output table),

Through research, people get more enlightened about any assertion or hypothesis that may have been made without any proof. Most researches are conducted when there is a problem or a general observation which requires validation. In order to conduct any given

It reports that President Barack Obama, at the time headed for the Presidential Polls with his closest rival, Republican Mitt Romney, had taken a lead in all three polls. However, the reporter was concerned about the

Statistical tools are used in research to provide evidence-based results that will be able to support the hypothesis formulated for the research. Statistical tools also aid in quantifying the error or bias present in the study (fao.org). Different researchers in the field of medicine use these statistical tools to be able to compare data and derive significant conclusions from the surveys or case studies that are conducted.

The schools that have made it mandatory requirements for students to take the LSAT in the U.S. are all members of the Law School Admissions Council (LSAC) (Burdette 4). According to Michigan State University, most Law Schools have adopted the LSAT admissions criteria to improve their overall rankings in the LSAC (128).

University of Toronto is considered the best one being the first in rank among the other universities. The University of Columbia takes the second place after

A correlation coefficient of -1 indicates that the two variables are perfectly related in a negative linear sense. 0 correlation coefficient indicates that no linear relationship between the two variables. Regression analysis identifies the relationship between a

These include sole proprietorship, partnerships and a company (Films for Humanities & Sciences, 2011). The three business structures have both advantages and disadvantages that an entrepreneur must consider before choosing the type

I error would be preferred over type II error because type I error would mean that the budget is under quoted and influence supply for additional resources. Even though surplus supply may lead to financial strain in other activities, the error guarantees healthcare needs and

Therefore, it offers a more sustaining level indicating resistance or support1. The product 8 records higher sales in 8d1 stores, followed by 8b1, while the worst performing are 8a1 and 8c1. To run the simple moving average, the product

The author of the paper states that to find a solution to the problem by research requires identifying and analyzing the nature of the problem. The analysis largely depends on the collected data, and so the importance of the analysis lies with the quality of the data collected. Reliability and validity are necessary for accuracy.

In the case of the work done by Messina, Scott, Ganey, Zipp and Mathis (2009), the sample size is 14 (seven teaching and seven nonteaching hospitals that had been in vibrant operation from 1999 to 2003). The dependent

For those organizations that have incorporated ICT in the business framework, it is clear that this technology goes way far in contributing to organizational profits. In this view, the author recommends that hotel managers integrate IT into their business framework. For large organizations, Dana suggests that they adopt the use of professional software to improve their data management system.

The study also sought to find the functional state and attitudes directed towards seeking medical healthcare. Therefore, this paper

For the current model, logistic regression was applied to test the fit of the model while at the same time predicting the probability of whether customers make

A subject matter in such a case may be an event happening in their environment applications within their learning classes. During hypothesis testing the researcher allows themselves a confidence level as they are not 100% sure of the event happening. Hypothesis testing is a part of our decision-making procedure that makes an individual anticipate

In terms of scholastic achievement which is often included in biographical inventories. One of these measures is the grade point average (GPA). The GPA is very important as it is used in a variety of ways in personnel selection (Roth and Bobko, p. 399). The average CLU GPA for the All Graduate Programs is 3.34 while the average CUM GPA is 3.29.  

When making use of the regression analysis tool, the three key things worth consideration are the response variable, the explanatory variable,

ge groups, ethnic groups have been sampled so as to come up with the results the questions asked were the frequency of going to church, marital status and the health of the marriage. Answers were provided for each question. From the results, we can prove the hypothesis that

shing numerous analysis and corresponding forecasts, I was capable of making suitable conclusion of the forecast, which mainly included the Winter’s Exponential by utilizing the MAPE and the corresponding RMSE that acted as the main determining factor. The company has been

X is the number that corresponds to the position of the first letter of your first name within the English alphabet; Y is the number that corresponds to the position of the second letter of your first name within the English alphabet; Z is the number that corresponds to the position of the first letter of your surname within the English alphabet.

Measures of dispersion include variance or standard deviation, minimum and maximum variables values, kurtosis and skewness (Trochim, 2006). Descriptive statistics produce sample summaries about observations. There are two types of summaries

is to ensure that the business continues to be in operation by having the ability to pay short-term debts and operating expenses anytime they fall due. This involves managing payables, stock, cash and receivables. The Week 3 video assignment presents different strategies that

The research problem is stated the sixth paragraph of the study. The study presents the article’s statement of purpose. The study uses pre-existing groups because the workers are randomly assigned and not shuffled to engage within different sites.

This approach reduces noise in experiments by minimizing extreme deviations in groups’ observations. It reduces noise by eliminating outliers in collected data

In deed, my grasp of the content taught fascinated me. Overall, the course was very interesting. I found it motivating using the statistics disc to analyze data. My favorites were the MSL assignments, hypothesis testing, descriptive

This is not a practical difference. b. A small effect is less than 0.30, a medium effect is from 0.30 to 0.50 and a large effect is more than 0.50. Thus the 0.03 effect

More than one-third of customers (36 %) bought from 3 to 6 items. A relatively small number of customers bought more than 7 items. To get a per cent frequency distribution for the age variable it is necessary to determine the number of bins, the width of the bin, and determine the frequency for each bin (Anderson, Sweeney, and Williams, 37-95).

Similarly, Johnson joined the AC/DC rock band in 1980 to replace Scott. Johnson featured as the main vocalist in nine albums produced even into the 1900s. The Scott versus Johnson competition to establish the best rock vocalist reveals that

The mean is the most normally-used gauge of central tendency. The mean is the total values of the data divided by the overall amount of the items in the set of the same data. However, to measure how items behave in a set of data with regards to mean as a measure of central tendency, dispersion is used.