...Tell when to use a Pearson’s correlation, the possible research hypotheses for this statistical model, and when correlation can be used to test each type of Research Hypothesis (attributive, associative and causal). 1. A Pearson's correlation is used when you want to find a linear relationship between two variables. It can be used in a causal as well as a associativeresearch hypothesis but it can't be used with a attributive RH because it is univariate. 2. Pearson's correlation should be used only when there is a linear relationship between variables. It can be a positive or negative relationship, as long as it is significant. Correlation is used for testing in Within Groups studies. A possible research hypothesis for this statistical model would be that there is a positive linear relationship between variables. Another possible research hypothesis would be that there is a negative linear relationship. If there is no linear relationship between the variables, then we would retain the null hypothesis. 3. Pearson's correlation should be used when there is a significant effect. (p > .05) When there is a relationship between two variables. There can be a positive or negative correlation. It cannot be used when we retain the null hypothesis because then there is no relationship. It can be used if the null is rejected. 4. A Pearson's correlation is used when two quantitative variables are being tested in the RH. This cannot test attributive RH, but can associative and causal. The...
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...Econometrics Assignment 3 FB11001 Test the Multicollinearity problem with a suitable method. Solve the problem of Multicollinearity if so, by any one of the method which you thing suitable for your example? Answer: We have referred to the following data base1, in order to illustrate the multiple linear regression models. This database is the same as used for Assignment 2. X1 = annual net sales/$1000 X2 = number sq. ft./1000 X3 = inventory/$1000 X4 = amount spent on advertising/$1000 X5 = size of sales district/1000 families X6 = number of competing stores in district So here we wish to establish a relationship between the Annual Net Sales (Dependent) of a Franchise store to the area of the franchise store, the inventory levels, the amount spent on advertising, the size of the district and the intensity of the competition (Independent Variables). Theory: We propose that the Annual net sales be positively related to the size of the store, the inventory, amount spent on advertising, the size of the sales district and negatively related to the number of competing stores in the district. The Regression Equation estimated is:Regressand, (Denoted here, X1) Net Annual Sales = Regressors, Area (X2) +Inventory (X3) + Advertising (X4) + Size of District (X5) + Competition (X6) Multicollinearity is a term used to describe the presence of linear relationships among the independent variables. A Multicollinearity problem occurs when the relationship is very strong. It is called a problem...
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...Institute of Management Sciences Peshawar Bachelors in Business Studies Course Plan Course Title: Statistics for Business Instructor: Shahid Ali Contact Email shahid.ali@imsciences.edu.pk Semester/Duration: 16 Weeks Course objectives : To introduce students to the concepts of statistics and to equip them with analytical tools to be used in business decision making. The course is intended to polish the numeric ability of the students to identify business problems, describe them numerically and to provide intelligible solutions by data collection and inferential principles. Course pre-requisites Intermediate statistics Attendance Policy: Late arrivals are highly discouraged. Any student coming late to a class late by 5 minutes after the scheduled start time will be marked as absent for the day. The teacher reserves discretion, however, to allow or disallow any student, to sit in the class in case of late arrivals. Attendance is not be entertained once the attendance register is closed. Class Project Students will be divided in groups for a class project. Each group will have to nominate a group leader. The details of the project will be made available to the group leader. Class Presentations Each student will have to make at least one individual presentation and one group presentation in the class. The group presentation will be on the project explained earlier. The individual presentations will...
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...Hours : Wednesday 2.30pm – 4.30pm, Thursday 2.30pm-4.30pm OR by appointment Course Synopsis Business Statistics is the science of collecting, organizing, and summarizing data to provide information, stated in numerical form, for the purpose of making objective business decisions. Descriptive statistics will be the focus of the course with an abbreviated introduction to inferentialstatistics. Topics include the foundations of statistical methods of sampling, classifying, analyzing, and presenting numerical data; frequency and sampling distributions, averages, dispersion, hypothesis testing, and analyzing up to two populations and population proportions. The course will employ the use of an online statistics learning system for problem assignments, in conjunction with the text and lectures, in completing course coverage of each statistics topic. Course Objectives The goal of this course is to introduce students to the applications of statistics in business. Students should be able to appreciate the need for learning statistics and its importance in the real life business applications Learning Outcomes At the end of the course, students are able: 1. Prepare and perform analysis of data through common description measures. 2. Perform basic probability concepts making use of contingency tables. 3. Perform analysis using both discrete and continuous probability distributions. 4. Analyze importance of Central Limit Theorem in business applications. 5. Evaluate business...
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...Personality PSY/504 June 25,2012 Elisa Doebler-Irvine Personality Personality Is perceived differently by the general public and psychology professionals. Through examining the behaviors of the term psychologist view it a little differently. The contents of this essay will describe the definition of personality used by psychologist professionals today. Later, this essay will go in depth explaining the differences between case studies, correlation designs, quasi experimental designs, and true experiments. Each of these methods will be describes from what information they all provide and what advantages and disadvantages they hold. Every individual has a different view of the term personality. Idealistically a definition is created by how people use the word within sentences of different structures. Philosophically speaking the term personality is defined by how the general public perceives and uses the word (Cervone & Pervin, 2010). The general definition of personality consists of a combination of different characteristics or qualities that produce a subject’s distinctive character. Personality is built up of different qualities that can make someone interesting, different, and/or popular. It is defined as an enduring pattern of thought, feeling, and behaviors that are unique to each individual. Psychologist, however, have a much more in detail definition of personality. For instance psychologist addresses three issues when analyzing personality. These issues include...
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...experimenter isolates and controls all the variables excpet one, he makes sure that variable is the only one causing the desired effect. The The independent variable, which is the variable that the researcher is manipulating, is computer program that he created that will randomly generate the faces as each subject comes in. In this study the researcher used random assignment as the the subject would come in the the room. Random assignment is went the experimental and control groups a non-systematic and randomized way. The way he did this is by not telling his research nor the subjects knew which order they were going in. The team of researchers that found that the more time students spend interacting with technology, the less empathy they show towards other by doing a correlation study. Since many students already use technology a lot this was would be easier to use. The students increased use of their devices is one variable and their lower empathy towards other is the second one making a negative correlation. A negative correlation is a correlation indicating that the variables simultaneous in opposite directions. The second researcher that tried to determine that the more social support and a patient has the better the outcome of their disease treatment did this through...
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...|[pic] |Syllabus | | |College of Social Sciences | | |PSY/315 Version 2 | | |Statistical Reasoning in Psychology | Copyright © 2010, 2009, 2006 by University of Phoenix. All rights reserved. Course Description This is an introductory course in applied statistics, with particular emphasis in psychology. Both descriptive and inferential statistics are included. In addition, this course provides the basic statistical background and understanding needed. Policies Faculty and students/learners will be held responsible for understanding and adhering to all policies contained within the following two documents: • University policies: You must be logged into the student website to view this document. • Instructor policies: This document is posted in the Course Materials forum. University policies are subject to change. Be sure to read the policies at the beginning of each class. Policies may be slightly different depending on the modality in which you attend class. If you have recently...
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...BAO 3402 INTERNATIONAL BANKING AND FINANCE GROUP ASSIGNMENT© Weight : 20% of total assessment for the unit Due Date :Week 9 (Friday 5.30) (辽大同学上交时间待定) Coverage of the assignment: Week 3, 4, 5 and 8 (Learning outcome 2,3 and 4) Learning Method: Self and Group Study Instructions for group formation • Identify your group (you are responsible for suitable members for your group). • Enrolled for a group in VU-COLLABORATOR. Keep inform the number of the group you enrolled to other members in your group. Ask them to enrol to the same. • You should not enrol to group which somebody else already picked without their consent. Any such enrolment will be cancelled without prior-notice. • If you enrol without knowing into a group which you do not want, please inform me, I will de-enrol you. Introduction In theory, the foreign exchange (FX) market is considered a perfect market where we can expect the law of one price to hold.As we know, the law of one price provides thetheoretical basisfor all international parity conditions. International parity conditions can be used to understand the operational behaviour of the FX market.Thus, in a perfect market there will be no possibility of abnormal profit on arbitrage or speculation. Theaim of this group assignment is to give you an opportunity to empirically investigate the existence of some of thoseparity conditions. Assignment Tasks: Collect historical daily FX data for the following currencies for the period:02/01/2013to...
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...introduction to, research methodology before taking the I/O course. However, it is important that students become familiar with the contents of this chapter because: a) Quantitative methods are central to I/O psychology; b) Understanding research methods is a difficult subject for most students; c) Research methods are often quickly forgotten; d) Several topics relevant to I/0 psychology may not have been covered in previous courses. After studying the material in this chapter the student should be able to: 1. Understand and describe the characteristics of a good research question. 2. Explain each of the major concepts of research design including: variables, setting, generalizability, control, confounding, random assignment, and random selection. 3. Explain what a research design is; Describe different types of research designs as well as list their advantages and disadvantages. 4. Define the basic concepts of measurement. 5. List and describe the types of reliability. 6. Discuss the different ways of assessing validity. 7. Define basic concepts of descriptive statistics. 8. Explain the difference between descriptive statistics and inferential statistics. 9. Explain basic concepts in inferential statistics, especially statistical significance. 10. Report the nature and purpose of meta-analysis. 11. Explain what mediator and moderator variables are; explain the complex relationships they assess. 12. Understand the major principles...
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...SOC 100 Midterm Exam Part 1 – Assignment Question 1 _____ is considered the first female sociologist and argued that injustices such as slavery and women’s inequality stunted a society’s moral development. • Auguste Comte • Émile Durkheim • Karl Marx • Harriet Martineau Question 2 The ability of individuals and groups to exercise free will and to make social change is referred to as: • Structure • Agency • Free choice • Individualism Question 3 Patterned social arrangements that have an enabling or constraining effect on agency are referred to as: • Structure • Institutions • Free will • Socialization Question 4 Accepted social behaviors and beliefs are referred to as: • Norms • Culture • Social status • Values Question 5 The relationship between agency and structure is _____, as ______. • one-sided, agency influences structure • one-sided, structure enables or constrains agency • reciprocal, they both have an effect on one another • nonexistent, there is no relationship between the two Find the midterm exam answers here just a click away SOC 100 Midterm Exam Part 1 - Assignment Question 6 _____ established the first rules for conducting sociological research and examined the impact of modern society on social solidarity. • Auguste Comte • Émile Durkheim • Karl Marx • Harriet Martineau Question 7 _____ believed that nearly all known societies are characterized by some system of division by economic class, which...
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...the means of two or more groups, and calculating the correlation between two variables. The following paper will go in to more depth on what was discussed and what we learned as a team as well as individuals. The team also was able to go over the Mystat lab that we were assigned in the individual assignment. In step one a team would state a null hypothesis as well as an alternate hypothesis. The null hypothesis is used only for testing. We either reject or fail to reject the null hypothesis. The alternate hypothesis is accepted if sample data provide enough evidence that the null hypothesis is false. No matter what the problem looks like the null hypothesis will always contain the equal sign. This is true because since the null hypothesis is being tested there is a need for a specific value to be seen in the calculations. When comparing the means of two or more groups the team must state the null hypothesis. Random samples of each population must be chosen to show the formula in a working status. To get a more accurate sample a higher number of the populations should be used. An independent sample T-test is used to compare the means of two or more groups. Pooled variance can be used if the variances of the two populations being tested are constant. The correlation between two variables describes the likelihood that a change in one variable will cause a proportional change in the other variable. A high correlation between two variables suggests they share a common cause...
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...Marketing Research Assignment – Wendy´s Case Martin Meister – Boston University THE WENDY´S CASE A DEMOSTRATION HOW MARKETING RESEARCH AND ANALYSIS CAN HELP RESOLVING A MANAGEMENT DECISION PROBLEM Martin Meister – martinmeisterg@yahoo.com Boston University - MET AD 856 fall 2012 – Professor Vladimir Zlatev February 27, 2012 1 Marketing Research Assignment – Wendy´s Case Martin Meister – Boston University Table of Contents Introduction ...................................................................................................................................................... 3 1. - Problem Definition ....................................................................................................................................... 3 a. - Background to the problem...................................................................................................................... 3 b. - Statement to the problem........................................................................................................................ 4 2. - Approach to the Problem ............................................................................................................................. 5 3. - Research Design ........................................................................................................................................... 8 a. - Information needs ........................................................................................
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...and interpret inference (both estimation and hypothesis tests) of population means when the population variance is known or unknown. 2. Perform hypothesis tests on the differences between two means using both independent samples and matched pairs experiments. STAT 2001 “Statistics 2” 3. Use sampling distributions to calculate interval estimates and select appropriate sample sizes for proportions. 4. Test the significance of a population proportion and the difference between two population proportions. 5. Use nonparametric techniques to perform hypothesis tests for ranked data. 6. Make inferences from qualitative data including the use of Chi-squared tests of goodness of fit and independence. 7. Apply the tools of regression and correlation analysis to determine the nature and strength of relationships, including estimation and hyopothesis...
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...Abstract Purpose: The aim of this assignment is to test some of the main questions that were raised regarding to customers satisfaction about the services that they received from X Bank. Methodology: in order to test those questions and to measure customers’ satisfaction, we used SPSS program, which is the most compatible program for social science tests. So, our analyses were focused by using SPSS tools like: Descriptive statistics and Frequencies likewise cross tabulation and chi-square, also independent test and finally correlation. Findings: Throughout our analyses we were able to find some interesting results regarding to customers opinion for banks services and quality, for instance: There is statistical significant difference when it comes to gender loyalty to the bank, after the chi-square is less than 0.05, also it was clear that there is no correlation between age and perceptions of overall services 0.466. In addition, via our analyses there is a strong correlation between perceptions about service quality and co-operating with the bank in the future 0.867 at the 0.01 level. Table of Contents Introduction ……………………………………………………………………………… 3 Data analyses …………………………………………………………………………….. 4 Conclusion ………………………………………………………………………………. 14 Introduction Nowadays, being able to measure customers’ satisfaction is the main point to develop and sustain business. Organizations which are able to fulfil customers’ needs and wants they achieve to spread their businesses...
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...strength to us to complete this report that given by our lecturer. We are really grateful because we manage to complete our assignment in subject Econometrics within the time given by our beloved lecturer. We are very thankful to our Econometrics lecturer, Sir Abdul Razak Bin Jambari, for his valuable guidance, encouragement, and co-operation until the report have been done smoothly and successfully. He really helps us to giving ideas to do a research on this subject and also give some new skills and information that we did not have before. It is so valuable for us to know more about this subject and hopefully we can use it in future. This assignment cannot be complete without the effort and co-orperation from our group member. It is a great opportunity for us to do some research and write a report about relationship of KLCI between M2, price of gold, interest rate and CPI. At the time of preparing this report, we had gone through some research by using several methods for collecting the data and explained it through Eviews 8. Although this subject is new in UiTM Segamat and especially in Degree of Investment, by expertise from our lecturer, we able to do this assignment smoothly. Last but not the least, we would like to express our gratitude to our friends whose help us in guiding us collecting the data and complete this assignment. We hope this assignment can give useful knowledge to us and to others. Thank you so much. METHODOLOGY AND DATA INTRODUCTION The objective...
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