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Regression Analysis

ANOVA and Regression Problem

"You work in the shipping and logistics department for Beast Buy, an American mail order company that specializes in pet food for VERY exotic pets. Beast Buy has four warehouses/distribution centers that provide product to each of four different regions in the US; Atlanta services the southeast, Boston services the northeast, Cl

Correlation Coefficient

I need the full answers to the questions in the attached file. They are similar to exercises from Statistics for Engineers and Scientists, William Navidi. Exercise 1 The following table presents shear strengths (in kN/mm) and weld diameters (in mm) for a sample of spot welds. Diameter Strength 4.2 51 4

Great Plains Roofing: Regression analysis for best predictor of sales

Great Plains Roofing and Siding Company inc, sells roofing and siding products to home repair retailers, such as Lowe's and Home Depot, and commercial contractors. The owner is interested in studying the effects of several variables on the value of the shingles sold($000). The marketing manager is arguing that the company shou

Plan with Adequate Information for Hiring Appropriate Employees

A manufacturing plant that produces widgets wants to locate in a new community. The plant personnel officer advertises the employment opportunity and the next morning has 10,000 people waiting to apply for the 1,000 available jobs. It is important to select the 1,000 people who make the best employees because training takes time

Multiple Regression Equation: Example Problems

See file attached for data charts associated with each question. a) A bicycle company wants to measure the effectiveness of different types of advertising media in the promotion of its new bicycle. Specifically, the company is interested in the effectiveness of radio advertising and newspaper advertising. A sample of 22 cit

Descriptive and Probability Statistics: 15 comprehensive problems

1. (A) Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: zip codes for the state of Pennsylvania (B) Determine if this data is qualitative or quantitative: Nationality (C) In your own line of work, give one example of a discrete and one ex

Statistics: Regression models; elasticities

See attached data file. G = Total U.S. gasoline consumption, computed as total expenditure divided by price index. Pop = U.S. total population in millions GasP = Price index for gasoline, Income = Per capita disposable income, Pnc = Price index for new cars, Puc = Price index for used cars, Ppt = Price index for public

Research Article: Impact of Teamwork on Missed Nursing Care

See attached article. Please briefly describe: Conclusions of the study? Limitations of the study? Variables (i.e, independent/dependent ) What type of study is this? For example randomized, Non randomized, cross sectional, Descriptive? What are the statistical results that led to the conclusion?

Regression Formula: Harry Potter Example

The students in a modern popular fiction class are complaining that every time Rowling writes another book, it gets longer. Their statistics teacher challenges them to show that their complaints are accurate. Using the Harry Potter data below and a 0.05 level of significance, perform a correlation/regression analysis betw

Strengths and weaknesses of correlational and regression studies

1. Discuss the strengths and weaknesses of correlational and regression studies; discuss concepts such as positive and negative correlations, correlation coefficients, confounding, and causality. 2. You read an interesting study in the paper that says that during any given year, statistics show that ice cream consumption an

Statistical Analysis

See attached data file. 2. Sex discrimination. The dataset salary.dat contains salaries and other characteristics of all faculty members of a small college. The data were collected for presentation in legal proceedings in which discrimination against women in salary was at issue. All faculty members represented in the datas

Financial Analysis with Excel

Please utilize the attach Excel file to respond to the following questions. A . Create an XY (scatter) plot to show the relationship between the returns on AT&T and the S&P 500. Describe, in words, the relationship between the returns of AT&T and the S&P 500. Estimate the slope of a regression equation of this data. Repeat for

Probability Distribution, Correlation & Regression Analysis

The scatter plot below shows the relationship between the day of a particular month a stock was valued and the price of the stock in dollars. The horizontal axis represents the day of the month. Use this graph to answer the questions below. Please see the attachment for the scatter plot. (A) How would you describe the r

Multiple Regression Problems using SAS program: Predict GPA

Variables are: id, a numerical identifier for each student; GPA, the grade point average after three semesters; HSM; HSS; HSE; SATM; SATV; which were all explained in class; and GENDER, coded as 1 for men and 2 for women. 1. Create a new variable called SAT which equals SATM + SATV and run following two regressions:

Statistics: Hypothesis Testing and Simple Linear Regression

See attached files. Lab 2: Hypothesis Testing and Simple Linear Regression Purpose: Students will learn (1) use Excel formulas to build contingency tables for the Chi-Square test of independence; (2) use Excel built-in data analysis procedures to perform one-way ANOVA test; (3) use Excel built-in data analysis procedures

Statistics: 7 problems, Hypothesis Testing and Regression Analysis

Please see attached file. Attached (2): 7 statistic questions (.doc) Formulas and Tables (for reference) --------------------------------------------------------------------------------- HYPOTHESIS TESTING Problem 1 thru 4 (don't forget to state your hypotheses, type of test, alpha level, and your decision statisti

Linear Trend Model-Regression analysis

Rubax, a U.S. manufacturer of athletic shoes, estimates the following linear trend model for shoe sales : Qt = a + bt + c1D1 + c2D2 + c3D3 Where Qt= sales of athletic shoes in the tth quarter T = 1,2, â?¦.,28 [2004(I), 2004(II), â?¦., 2010(IV)] D1 = 1 if t is quarter I (winter); 0 otherwise D2= 1 if it is t quarter II

Multiple Regression and Model Building: Zebra Wild Game Far East restaurants

See attached file. The Zebra Wild Game Company sells exotic game to high end restaurants throughout the Far East. The sales manager wants to determine what, if any, relationship exists between the pounds of game sold by 24 sales persons and two independent variables, namely, the advertising dollars spent (in hundreds of tho

Multiple Regression and Model Building: Abalone Fancy Fish Company

See attached Excel file. The Abalone Fancy Fish Company sells exotic fish to high end restaurants throughout the East Coast. The sales manager wants to determine what, if any, relationship exists between the pounds of fish sold by 24 sales persons and two independent variables, namely, the length of time ( in years ) the sal

Investment Analysis: Fama and French model for Company A and Cisco Systems

Using the attached Fama and French Excel File: (a) Try to fit the CAPM equation to Company A's returns. What is the percentage of variation in Company A's returns attributable to system risk? (run a regression to answer this question) (b) Try to fit the 3-factor Fama and French model. Discuss the magnitude and economi

Correlation and Multiple Regression Analysis

PROBLEM 1 A consumer data analyst collected the following data on the screen size of popular LCD televisions sold recently at a large retailer: Manufacturer Screen Price ($) Sharp 46 1473.00 Samsung 52 2300.00 Samsung 46 1790.00 Sony 40 1250.00 Sharp 42 1546.50 Samsung 46 1922.50 Samsung 40 1372.00 Sharp 3

Key Data Regarding Multiple Regression Analysis

See attached file for full output. Municipalities and states have been asked by the Department of Energy to assess their energy requirements for each of the alternative fuels. In particular, they have decided to focus initially on natural gas, given the enormity of U.S. reserves and its relative cleanliness. Following ar