Share
Explore BrainMass

# Regression Analysis

### Regression Table

2. Assume that you are a policy analyst. Your staff has collected cross-sectional data on the determinants of average length of stay in various hospitals. A staff member hands you the following table or regression results, assuming that you know how to interpret it. Table. Regression Results for the Impact of Various Factors on

### 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

### Explain how a scatter diagram can be used to identify the type of regression to use.

Explain how a scatter diagram can be used to identify the type of regression to use.

### 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

### Statistics: Email filters, Growth of aerospace and defense companies; dog food, weight

FOR YOUR EMAIL YOU USE A FILTER TO BLOCK SPAM FROM YOUR INBOX. THE NUMBER OF ITEMS BLOCKED BY DAY OF WEEK IS RECORDED AND A STATISTICAL SOFTWARE SYSTEM IS USED TO PERFORM THE ANALYSIS THAT FOLLOWS. HERE ARE THE RESULTS. SOURCE DF SS MS F P FACTOR 6

### Statistics: Five step test for US gas consumption using F test, scatterplot, correlations

See attached data file. 1. Show variables data are useful, there will be a number of variables look at scatter plots, do an F test. This will tell if one of the variables has some predictive value or not. 2. What is the first order of term appropriate? What are independent variables interacting with other independent variabl

### 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

### Study on transportation safety: Numerical, graphical summaries, regression analysis

As part of a study on transportation safety the US Department of Transportation collected data on the number of fatal accidents per 1000 licenses and the percent of licensed drivers under the age of 21 in a simple of 42 cities Data collected over a one-year period follow. These data are available on the CD accompanying the text

### 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

### Regression equation: Size of a home vs other variables (family income, family size, presence of a senior adult parent, years of education)

A real estate developer wishes to study the relationship between the size of a home the client will purchase (in square feet) and other variables. Possible independent variables include the family income, family size, whether there is a senior adult parent living with the family (1 for yes, 0 for no) and the total years of educa

### 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

### Descriptive Analysis: Bivariate Data, Probability Distributions (Discrete Variables)

Please see attachment to view the tables. 1. A bag of colored blocks contains the following assortment of colors: red (15), blue (6), orange (22), purple (14), green (6), and yellow (17). Construct the probability distribution for x. 2. Classify the following as discrete or continuous random variables. (A) The

### 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

### Statistics: Correlation Coefficient & Regression Analysis

Please help with the following problem. Provide step by step calculations. Construct a scatterplot for the (x, y) values below, and answer the following questions. x y 1 -10.0 2 -20.0 3 -30.0 4 -40.0 5 -50.0 Q

### 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

### Probabilities: Express service, employy exercise, customer checkout line, purchases

See attached template file. 28. Suppose the regional express delivery service wants to estimate the cost of shipping a package (y) as a function of cargo type, where cargo type includes the following possibilities: fragile, semi fragile, and durable. Costs for 15 randomly chose packages od approximately the same weight and s

### 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