...Assignment 6 : Answers Chapter 14: Solutions: 1 a. The Scatter diagram is as follows b. There appears to be a positive linear relationship between x and y. Any kind of a line that we draw by hand or otherwise would go upwards as we go from left to right on the X axis c. Many different straight lines can be drawn to provide a linear approximation of the relationship between x and y; in part (d) we will determine the equation of a straight line that “best” represents the relationship according to the least squares criterion. d. | | | | | | | | 1 | 3 | 1-3=-2 | 3-8=-5 | (-2)(-5)=10 | 4 | | 2 | 7 | 2-3=-1 | 7-8=-1 | (-1)(-1)=1 | 1 | | 3 | 5 | ...
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...The Justice Department in one of the twenty counties in the state of Texkansahomatucky. Recently, the state Justice Department published a short report releasing crime statistics that included a crime map and your county was flagged as a high crime county. Because the District Attorney in the county is up for re-election this year, he is concerned that this report will significantly hurt his election chances. He has asked you to both verify that the methodology used in the official report indeed indicates that your county is in fact a high crime county and to write a short report proposing a "better" methodology, where you are to interpret "better" to mean a methodology that takes your county off the list of high crime counties! Instructions Your first task is to attempt to replicate the results of the report you are given based only on the information contained within the report. As you recall, the report should include both "a verbal description of the metric used including at least your method of calculation and the high crime/low crime threshold" and the raw data used to create the metric. If the attached report you have in front of you did this, you should have no problem recreating the results (you will need to cut/paste the data from the appendix of the report given to you into excel). Should you be unable to replicate the results, if I determine that this was because the original report was not written well enough to be replicable then it will not affect your grade...
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...TABLE OF CONTENTS Table of Contents………………………………………………………………… 1 1.0 INTRODUCTION............................................................................................. 2 2.0 DEFINITION OF TERMS?..............................................................................2 2.1 Statistics …................................................................................. 2 3.2 Range....................................................................................................... 2 3.3 Measure of Variation................................................................................2 3.0 MEAN................................................................................................................. 3 3.1 Arithmetic Mean...................................................................................... 3 3.2 Arithmetic Mean of grouped data............................................................ 4 3.3 Properties of the mean............................................................................. 5 3.4 Geometric Mean....................................................................................... 6 3.5 Harmonic Mean........................................................................................6 4.0 MODE.........................................................................................................…… 7 4.1 Locating Repeated values........................................................................ 8 4.2 Estimating...
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...Module 2 – Organizing and Describing Data Written Assignment 2 - In your own words, interpret the data and note the shape of the distribution of the data provided from Case Study: World's Richest People (Chapter 2, p. 36). Sample | Category | Frequency per Category | Rel. frequency per category (%) | Citizenship | Mexico | 1 | 4.00% | | United States | 14 | 56.00% | | Spain | 1 | 4.00% | | Hong Kong | 2 | 8.00% | | France | 2 | 8.00% | | Sweden | 1 | 4.00% | | Germany | 1 | 4.00% | | India | 1 | 4.00% | | Italy | 1 | 4.00% | | Canada | 1 | 4.00% | From the frequency distribution table listed above, the country with the largest amount of the world’s richest people is the United States with 56% of the world’s richest people. It also shows that of the countries that have one of the world’s richest people, 7 out of 10 of the counties only have 1 of the richest in each country. Stem-and-Leaf Plot | | | Unit: | 1 | | | 0 | | 1 | | 2 | | 3 | 9 | 4 | 09 | 5 | 5678 | 6 | 345589 | 7 | 133779 | 8 | 2458 | 9 | 03 | Using the stem-and-leaf plot above you can see that the age range with the most of the world’s richest people is 60-79 years old. This plot also shows you a left skewed distribution. Also in a stem-and-leaf plot you can see the specific ages in the prominent age range that hosts the most individuals in the world’s richest people category. Using a histogram shows the view of the data and what type of...
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...What is statistics? Satistics has two processes- Describing and Draw conclusions. Statisical Methoths: Descriptive and inferintial Elements of statistics. Week Two: Key Terms Frequency is the no of occurence Relative frequency is divided by the total numbers of observations in the data set. Percentage: is the class relative multiplied by 100 Cummaltive Frequency is the addition of all the frequencies together to get a 100% Data Presentation Summary Table Pareto Diagram is almost the same as a bar chat. *Summation Notation n=sample size Central Tendency is the set of mesurements- ie the tendency of the data to cluster, or center, about ceratin data. Variability is the set of measurements. Focus on sample and population. N-pOPULATION SIZE n- sample size Mean Common measure of central tendency and acts as balance point, affected by extreme values. Median Measure of central tendency, middle value in ordered sequence(if n is odd, middle value of sequence) Mode Value that occurs most often, not affected by extreme values. Shape It will be skewed if they are etxtreme values. Symmetric is when the mean or median are close. Left-skewed: Mean would be smaller than median Right-Skewed: Median would be larger Range:It ignores how datas are distributed Maximum value-Minimum Value Standard Deviation Measures of dispersion Most common measures considers how data are distributed. Shows variation about mean ...
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...Research paper 1 SCADA Attack worldwide In era of modern technology evolves and it change continuously over the time as well as it creates risk or threat. The emergence of Internet and worldwide technologies as these systems were tightly integrated with business systems and became more exposed to cyber threats. Supervisory Control and Data Acquisition (SCADA) protocols are communications protocols designed for the exchange of control messages on industrial networks. A control system is a device or set of devices to manage, command, direct, or regulate the behavior of other devices or systems. By complexity, the reliable operation of modern infrastructures depends on computerized systems and SCADA systems. These control systems and devices communicated with each other almost exclusively, and rarely shared information with systems outside their environment. As more components of control systems become interconnected with the outside world using IP-based standards, the probability and impact of a cyber attack is at highest risk. Complexity of SCADA architectures, there is a variety of both wired and wireless media and protocols involved in getting data back to the central monitoring site. This enables implementation of powerful IP-base SCADA networks over mixed cellular, satellite, and landline systems. SCADA communications can employ a diverse range of both wired (lease...
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...Running head: PURCHASING A HOUSE RISK PAPER Purchasing a House Risk Paper Keller Graduate School of Management Project Risk Management PROJ 595 Dr. Susan Orr August 04, 2013 Purchasing a House Risk Paper INTRODUCTION The many advantages to owning a home have been well publicized. However, the above satistics make it clear that owning a home is not without risk. To form a complete picture, you, the prospective buyer, need to consider the potential risks and disadvantages of home ownership as well. Understanding these disadvantages beforehand will give you a better chance of minimizing their impact and avoiding the fate suffered by these homeowners. RISKS IDENTIFICATION There are many risks in buying a new house such as: • The opportunity cost of investing in an alternative investment is very high because the entire cash and future income stream is tied up into one asset a home, which may or may not appreciate. • The house is an undiversified investment, so if the market tanks as it has, game over. • Knowing that we do not own our home, the bank does. • A lot of cost connected to home ownership, such as repairs and insurance and fees and potential hazards I have not considered. • If I lose my job, game over, this will put a lot of stress on me. • There is a chance that your new home will lose value. Luckily, in general, the longer you own your home, the less likely a loss becomes. Loss of value is typically a short-term problem, possibly due to the local...
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...Causes and Treatments of Addictions Tracy J Lancaster Behavioral Satistics 325 July 29th 2012 Instructor Sasha Flearly Causes and Treatments of Addiction Introduction Addiction is a condition defined by an individual's intense need to consume a particular substance, usually an illicit drug or alcohol. Typically regarded as a disease or medical condition, addiction is seen by many as a form of disability. Addiction is generally diagnosed based on the following criteria: tolerance, withdrawal, and craving. Tolerance refers to the body's ability to metabolize, or tolerate, a certain quantity of a substance prior to reaching the point of intoxication. Withdrawal refers to the agitated behavior, ranging from mild irritability to severe physical illness that many habitual substance users display when they cannot consume their desired substances (Hamid, 2002). Finally, craving refers to a user's physical, and frequently psychological, need to consume a substance in order to offset withdrawal symptoms. People are believed to be addicts when they habitually consume drugs or alcohol, often to the point of intoxication, and when they display signs of withdrawal and craving in the absence of those substances. Recently some scholarship has examined how many behaviors like gambling, sex, and exercise can also be addictive based on these criteria. Thesis Statement Drug Addiction is a relatively recent construct in a social phenomenon. That is, regardless of the use...
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...BIS Working Papers No 420 On the correlation between commodity and equity returns: implications for portfolio allocation by Marco Lombardi and Francesco Ravazzolo Monetary and Economic Department July 2013 JEL classification: C11, C15, C53, E17, G17. Keywords: Commodity prices, equity prices, density forecasting, correlation, Bayesian DCC. BIS Working Papers are written by members of the Monetary and Economic Department of the Bank for International Settlements, and from time to time by other economists, and are published by the Bank. The papers are on subjects of topical interest and are technical in character. The views expressed in them are those of their authors and not necessarily the views of the BIS. This publication is available on the BIS website (www.bis.org). © Bank for International Settlements 2013. All rights reserved. Brief excerpts may be reproduced or translated provided the source is stated. ISSN 1020-0959 (print) ISBN 1682-7678 (online) On the correlation between commodity and equity returns: implications for portfolio allocation∗ Marco J. Lombardi† Francesco Ravazzolo‡ July 11, 2013 Abstract In the recent years several commentators hinted at an increase of the correlation between equity and commodity prices, and blamed investment in commodity-related products for this. First, this paper investigates such claims by looking at various measures of correlation. Next, we assess what are the implications of higher correlations...
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...影響網路團購再購意願因素之研究 FACTORS INFLUENCING ON THE REPURCHASE INTENTIONS IN THE ONLINE GROUP BUYING ENVIRONMENT 指導教授：楊浩二（Prof. Hao-Erl Yang） 研 究 生：林淑婉（Su-Wan Lin） 大同大學 事業經營研究所 碩士論文 Thesis for Master of Business Administration Department of Business Management Tatung University 中華民國九十九年六月 June 2010 i i FACTORS INFLUENCING ON THE REPURCHASE INTENTIONS IN THE ONLINE GROUP BUYING ENVIRONMENT 影響網路團購再購意願因素之研究 A THESIS SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF MANAGEMENT OF TATUNG UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE DEGREE OF MASTER OF BUSINESS ADMINISTRATION BY Su-Wan Lin 林淑婉 JUNE 2010 TAIPEI, TAIWAN, REPUBLIC OF CHINA ii iii ACKNOWLEDGEMENT Concerning the successful completion of this thesis, I have to thank my advisor Professor Hao-Erl Yang ( 楊 浩 二 ) first. The professor’s professional guidance and assistance provide many suggestion and inspiration for me from the direction correction of thesis topic, establishment of research framework, provision of related literatures, and methodological guidance in my thesis writing process. Therefore, express my heartfelt thanks here with regard. Besides, I’m very grateful to the thesis committee’s members, Professor Hsien-Che Lee (李賢哲) and Professor Yun-Huei Lee (李芸蕙) for the review, and give me many valuable suggestions. Thus, the thesis oral defense can be completed successfully, and express my sincere gratitude here. Furthermore, I have to thank my husband Hao-Wen Hsu’s encouragement and...
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