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Statistics Essay Examples

Essay on Statistics

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Statistics - Introduction        As defined by different scholars and mathematicians, statistics refers to the science of developing conclusions and learning from data, calculating and making informed decisions about a phenomena and its behavior through the use of data from calculated assumptions such as mean, mode, standard deviation, variance, and probability among many others (Pestman & Alberink, 2008). The following calculations will adopt several of the statistics assumptions to calculate results and make conclusions about the behavior of…...

Advantages and Disadvantages of Being an Actuary

Intro I. Great afternoon to Ms. Parimala and my fellow schoolmates. II. The subject of my discussion today is Benefits and drawbacks of Being an Actuary. What is an actuary? Experts in threat management Uses mathematical abilities to determine possibility and increase of future occasion Useful information to many markets III. The benefits of being an actuary are High earning capacity Corporate respect received IV. Nevertheless, the downsides are Examination requirements for development Demanding and effort Material A. Advantages a.…...

The Two-Point Threshold

Introduction In the two-point threshold experiment it is obtained how close two distinct sharp point can be together for a person to feel two points instead of one. The value of the two-point threshold is the minimal distance at which the subject can feel two distinct points. The principle behind this experiment is the fact that mechanoreceptors are not distributed homogeneously in the skin of the human body. There are areas with a higher density and areas with a lower…...

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Gulf Real Estate Properties

Gulf Real Estate Properties, Inc., is a real estate firm located in southwest Florida. The company, which advertises itself as " expert in the real estate market, " monitors condominium sales by collecting data on location, list price, sale price, and number of days it takes to sell each unit. Each condominium is classified as Gulf View if it is located directly on the Gulf of Mexico or No Gulf View if it located on the bay or a golf…...

Statistical methods in medical research

It is a well known fact that statistics can be misleading. They are often used to prove a point and an easily be twisted in favor of that point. Statistics, graphics and database are used in medical field to approve, prove or disapprove theories, analysis and interpretation of ailments, medications and its impact and treatment and its effectiveness. As noted by Nursing Research (2011)/ “Health Information is very often explained in statistical terms for making it concise and understandable (Basic…...

Basic Statistics for Business and Economics

Over the last four weeks of being in the QNT/351 course our team has learned a lot about researching a hypothesis and understanding the mean. The hypothesis testing begins with the statement and the assumption that determines the population of the mean, (Lind, 2011, p.288.). There are five steps taken which include; state the hypothesis, select level of significance for it, identify the test statistics, formulate decision rule, and take a sample to arrive at a decision. On the contrary,…...

Quantitative Analysis - Dupree

Dupree Fuels Company sells heating oil to residential customers. The company wants to guarantee to its customers that they will not run out of heating oil at any time during the winter months. Factors such as the energy efficiency of homes and the temperatures during winter months have been shown to be important factors related to the amount of heating oil that customers use. The company collected data from a sample of 40 residential customers regarding four variables, oil usage,…...

Testing hypothesis

Introduction to Hypothesis Testing 8.1 Inferential Statistics and Hypothesis Testing LEARNING OBJECTIVES 8.2 Four Steps to Hypothesis Testing After reading this chapter, you should be able to: 8.3 Hypothesis Testing and Sampling Distributions 8.4 Making a Decision: Types of Error 8.5 Testing a Research Hypothesis: Examples Using the z Test 8.6 Research in Focus: Directional Versus Nondirectional Tests 8.7 Measuring the Size of an Effect: Cohen’s d 8.8 Effect Size, Power, and Sample Size 8.9 Additional Factors That Increase Power…...

A warm welcome to BN2102 Bioengineering data analysis

Understand the statistical analysis that commonly accompanies publication of experimental data in scientific literature.  Perform the appropriate statistical analysis for a given set of experimental data. Estimate a parameter of interest by performing a suitable fitting to a set of experimental data. Create a suitable mathematical model based on the available experimental data. The module is divided in two parts. The first part will be taught by Chen Peiyi of the Department of Statistics and Applied Probability while the second…...

Importance of Mathematics and statistics to Economics

INTRODUCTION Statistics and mathematics are everything to economics. infact statistics and Mathematics, the economic field wouldn't even exist. Economist need statistics to represent data, to track and store information, to identify trends, to attribute value and mathematics to calculate those figures.The way to look at the relationship between statistics and economics is that economics is essentially the study of human decisions and trends, and how these have a financial impact. Economists rely on information to form analyses, understanding and opinion…...

Advantages And Disadvantages Of Official Statistics In Sociological Research

Official statistics are quantitative data produced by local and national government bodies, and can cover a wide range of behaviour including births, deaths, marriages and divorce, income, crime, and work and leisure. Official statistics can be produced as a by-product of the normal workings of a government department, but they can also result from research designed specifically to produce them. Two main sources of official statistics are the government and its departments, and surveys. For example, government departments such as…...

Chapter 7 Exam Review. Solve the problem.

1) Find the critical value that corresponds to a degree of confidence of 91%. A) 1.70B) 1.34 C) 1.645 D) 1.75 2) The following confidence interval is obtained for a population proportion, p:0.817 < p < 0.855 Use these confidence interval limits to find the point estimate, A) 0.839 B) 0.836 C) 0.817 D) 0.833 Find the margin of error for the 95% confidence interval used to estimate the population proportion. 3) n = 186, x = 103 A) 0.0643…...

Alternative hypothesis

A hypothesis is a statement about the value of a population parameter. The population of interest is so large that for various reasons it would not be feasible to study all the items, or persons, in the population. Analternative to measuring or interviewing the entire population is to take a sample from the population of interest. We can, therefore, test a statement to determine whether the empirical evidence does or does not support the statement. Hypothesis testing starts with a…...

lies,damned lies and statistics

"Lies, damned lies, and statistics" is an expression describing the convincing power of numbers, especially the use of data to strengthen weak arguments. It is also in some cases colloquially utilized to question statistics used to prove an opponent's point. The term was popularised in the United States by Mark Twain (to name a few), who attributed it to the 19th-century British Prime Minister Benjamin Disraeli (1804-- 1881): "There are 3 type of lies: lies, damned lies, and data." This…...

Solution Focused Therapy

Introduction Time series analysis is a statistical research approach appropriate for an important class of longitudinal research designs. Time series designs typically involve single subjects or research units that are measured repeatedly at regular intervals over a large number of observations. Time series analysis is a great example of a longitudinal design. A time series analysis can help us to identify the pattern of change in a behavior over time or evaluate the effects of either a planned or unplanned…...

Brief Immigration Statistics

This pie chart shows us the percentage of immigration from Russia between 2003-2008. From different sources of information there are five different countries which contain a large number of immigrants from Russia. Nowadays we can easily change our place for living. Somebody is searching for a highly paid job, another wants to have a luxury life, to learn foreign language or give their child good education. The main reasons why our compatriots immigrate are: In search of a new job…...

Analysis of Market and Customers of Pampers Diapers

Introduction The product I chose is Pampers brand diapers, the largest brand of Procter & Gamble Company. It is an American global and diverse company that provides consumer packaged goods in the areas of beauty and grooming, health and well-being, and household care. According to Rehtmeyer (2010), P & G’s products are sold in more than 180 countries and its goal is to provide products of superior quality and value to improve the lives of world’s customers (p. 5). P…...

Hypothesis Testing Methods

Task 1: Solve the following problems: A student of the author surveyed her friends and found that among 20 males, 4 smoke and among 30 female friends, 6 smoke. Give two reasons why these results should not be used for a hypothesis test of the claim that the proportions of male smokers and female smokers are equal. First, the sample is not random, it is a convenience sample and therefore cannot be trusted. Second, np҄ = x = 4 <…...

Provisions And Contingencies in Project Management

Under IFRSs IAS 37, a provision is recognized for a legal or constructive obligation arising from a past event, if there is a probable (more likely than not) outflow of resources and the amount can be estimated reliably (IAS 37.14). In contrast, according to FASB ASC 450-20-25-2, a contingency (provision) is recognized if it is probable (likely) that a liability has been incurred and the amount is reasonably estimated. Scenario 1 (1) Under IFRSs: According to IAS 37.22, the contamination…...

Importance of Statistics in Educational Management

To accomplish set goals in an organisation, the school manager or administrator must plan, implement such plans and evaluate success. To do so, the use of statistical data is crucial. In this paper the writer is going to discuss the importance of statistics in her area of study which is Educational Management. According to Kendrick (1997:1) statistics are, “numbers that help us find patterns in data, such as averages and medians.” Thus statistics looks at how to collect, organise, analyze…...

Gulf Real Estate Properties Business

Many people dream of having a home with an ocean view from their home. Being able to walk onto your patio, sit, and admire a sunset sound like a scene in a Nicholas Sparks’ novel. So it should come to no surprise that homes with a scenic ocean view can demand a high price in the real estate market. Below you will see just how different the price from a sample of Florida condominiums sold with and without views of…...

Descriptive Statistics

In research, the need to accurately produce results is imperative to efficient research. Team C’s hypothesis of what generates champion teams needs many tools provided in research to achieve a true answer. Team C has further simplified the meaning of champion team to any team whose team dynamics cause the team to have a winning season. With that being said, this paper will be focused on the research tools needed and the results provided by the tools to answer what…...

Managing Employee Retention

Data Quality: It is essential to make sure the information you utilize stands. An outlier information point can significantly decrease the fit of a model, so it is crucial that bad information points be moved. In the case of the Store24 information, we will assume that all managers have some experience, so get rid of any data points where the manager experience is zero. Regression Analysis First, you should run a full model for profit that consists of both period…...

Hypothesis Testing Procedure

The purpose of hypothesis testing is to allow an individual to choose between two different hypotheses pertaining to the value of a population parameter. Learning team C has conducted a hypothesis test surrounding the amount of time spent on homework by males and females, and will address if there is a correlation between the variables. Additionally, learning team C will determine if there is a positive or negative correlation, and how strong that correlation is between both variables. Overall, statistics…...

Effects of Caffeine and Nicotine on Lumbriculus Variegatus

An experiment was conducted to study and explore the circulatory system by exposing Lumbriculus variegatus, black worms, to household drugs. Lumbriculus variegatus was chosen as the experimental organism because of their transparent bodies and their simple physiology. Their transparent bodies help the experimenters to easily see their pulse. Another reason for choosing this specific organism is their body structure—large surface area to size ratio. This feature allows the substances, such as the household drugs, to easily enter their body which…...

Uses of Statistics in Healthcare

Abstract For this assignment, I will be looking at the different uses of statistical information used in the healthcare setting. Statistics in healthcare are used in many areas including human resources, employee retention, patient satisfaction, and too many others to name. Hospitals use this information to look at areas that need improvement, to save money, and to improve different workflows. In today’s healthcare environment, it is much easier to look at these statistics with the implementation of the electronic medical…...

Practical Application of Statistics in Nursing

Statistics is a fundamental part of human knowledge. It is known to be the exact science of collection, interpretation, analysis and presentation of data. It is a mathematical science that gathers and explains causal phenomenon or relationship, analyzes and presents measurements, collects and analyzes information base on factual sources and presents data as accurate as possible. As Fowler, Chevannes and Jarvis (2002) put it, “Statistics looks at ways of organizing, summarizing and describing quantifiable data, and methods of drawing inferences…...

Growth and Development of Brassica rapa Plants

Intraspecific competition is a widely regarded principle mechanism in the structuring of communities and has an influence in the spatial dispersion of organisms such as plants. Knowing this, the authors designed an experiment to observe and understand the effect of intraspecific competition using Brassica rapa, operating under the precept that when the plant is grown in an limited space environment, the plants will grow quickly and will be able to produce offspring in a faster more efficient way. Utilizing a…...

Hypothesis Test

Hypothesis testing is a method of making decisions using data from scientific study. In statistics, a result is called statistically significant if it has been predicted as unlikely to have occurred by chance alone, according to pre-determined threshold probability, the significance level. Statistical hypothesis tests define a procedure that controls (fixes) the probability of incorrectly deciding that a default position (null hypothesis) is incorrect based on how likely it would be for a set of observations to occur if the…...

Intro to Statistics

Statistics is the branch of mathematics used to collect, analyze, interpret, and present data. It is used by business owners to make calculated decisions regarding the future of their companies. Types of Statistics There are two types of statistics. Descriptive statistics deal with describing a set of data elements graphically. This type of statistic does not make any sort of prediction, but rather shows bullet point type data. An example of descriptive statistics would be a plot line graph that…...

Scavenger Hunt

1. What is the instructor’s name (spelling counts)? Where did the instructor go to college? The instructor’s name is Jane Smith. 2. What is the instructor’s email address to be used for questions and submission of projects? 3. What day(s) of each week are Chapter homework assignments always due? Chapter homework assignments are always due on Thursdays and Sundays. Furthermore, discussions are due every Tuesday. 4. What is the time deadline (hour:minutes, AM or PM) for the Portal assignments to be submitted? Homework is due at 10 PM. 5. On Canvas, under Navigating the Portal, what are the…...

Modernization of Income System

1.)What were the problems faced by Income in this case? How were the problems resolved by thenew digital system? The insurance operations in the business earnings worn out and really laborious and need a large number of personnel and depend on the system documentary, which led to the intricacy of operations and the collapse of the system hp3000 central frequently and who was dealt with applications cooperative insurance coverage and accounting info systems and administrative and if the need to…...

Nursing Research Critique Assignment

I will be critiquing two different articles. Both studies are nursing studies that evaluate outcomes. I will be following specific key points for a quantitative perspective and a qualitative perspective. There is a guideline that I will be following for each article that includes identifying and examining the data collection and data analysis methodologies used in each study. The names of the articles are The Experience of Patients Undergoing Awake Craniotomy and The Effects of Crossed Leg Blood Pressure Measurement.…...

Damned Lies and Statistics: Untangling Numbers from the Media, Politicians, and Activists

This report is based upon the book "Damned Lies and Stats: Untangling Numbers from the Media, Politicians, and Activists", composed by Joel Best and released by University of California Press in 2001. Joel Best, a teacher of sociology and criminal justice at the University of Delaware, has composed an extremely understandable treatise on statistics, and how we can end up being better customers of the analytical information that penetrates the environment in which we live. Joel Finest is a sociologist…...

National Income Statistics and Standard of Living

The national income statistics show that the USA has the highest standard of living; this can be proved by looking at the gross national income of The United States, which is $12,969.6 million, and the gross national income per capita which is $43,740. This figure is over 125 times the income per capita of Tanzania which is $340. This also suggests that the standard of living in Tanzania is very poor. The UK calculated a gross national income of $2,263.7…...

The Role of Research and Statistics in the Field of Psychology

Unlike fields such as biology, chemistry and physics, psychology is not an absolute science. Psychology is often categorized under the “Social Sciences” or “Soft Sciences” because it deals with unpredictable elements such as human thoughts, feelings and behavior. Nevertheless, research and statistics are very crucial in psychology. These serve as the main tools in applying the concepts of psychology, as well as in gathering and interpreting related data. Psychological Research Psychological research is the thorough study of a certain psychological…...

Statistics: Credit Card and Pelican Stores

CASE 1: Pelican Stores Pelican Stores, a division of National Clothing, is a chain of women's apparel stores operating throughout the country. The chain recently ran a promotion in which discount coupons were sent to customers of other National Clothing stares. Data collected for a sample of 100 in-store credit card transactions at Pelican Stores during one day while the promotion was running are contained in the file named Pelican Stores. Table 2.17 shows a portion of the data set.…...

Godden and Baddeley (1975) Psychology

Godden and Baddeley (1975) Godden and Baddeley under took a field experiment in which they examined if being in the exact same environment when learning/remembering something affects their recall in appose to being in a different environment from where the words are discovered. They did utilizing an independent group style. Godden and Baddeley found 18 deep-sea scuba divers whom were offered 38 unassociated two or three syllable words, they all had the very same time to try and remember these…...

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