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Regression Analysis

Data Analysis Using Regression

Is the number of games won by a major league baseball team in a season related to the team's batting average? The information in the following table found in the Baseball Almanac (2003), shows the number of games won and the team batting averages for the 14 teams in the American League for the 2002 Major League Baseball season.

Determining the Degree of Freedom

4. Given the following data Advertising Price Quantity January 25 12500 15 February 30 12200 17 March 26 11900 16 April 28 12000 18 May

Regression Analysis

Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.

Discussing the Use of Statistical Tools and Surveys in Business

Answer the following questions separately and completely. Part 1: Describe ways in which the use of MS Excel as a tool for interpreting data can be used by a manager of an organization. Part 2: What potential legal and ethical issues could arise if the information gained in this survey was used to create an ideal profile

Regression line

For the following data, prove that the 95 percent confidence limits for the slope of the theoretical regression line are given by 4.33 < < 8.25. Heights (X) and weights (Y) of college students: X 63 72 70 68 66 69 74 70 63 72 65 71 Y 124 184 161 164 140 154 210 164 126 172 133 150 The regression line of Y on X is g

Least squares regression to predict amount spend

Super Markets, Inc. is considering expanding into the Scottsdale, Arizona, area. Ms. Luann Miller, Director of Planning, must present an analysis of the proposed expansion to the operating committee of the board of directors. As a part of her proposal, she needs to include information on the amount people in the region spend per

If you had a hypothesis (due to previous supporting literature) that attachment style would predict God image, but were also interested in understanding the predictive ability of abuse in explaining the variance in God image, which type of model would you use?

If you had a hypothesis (due to previous supporting literature) that attachment style would predict God image, but were also interested in understanding the predictive ability of abuse in explaining the variance in God image, which type of model would you use? A A step-wise Multiple Regression B A standard Multiple

Analysis of experimental data

Please see the attached file for full problem description. 1. The following data are taken from a certain heat transfer test. The expected correlation equation is y=ax^ (b). Plot the data in an appropriate manner and use the method of least squares to obtain the best correlation. y=aX^b then it says calculate a0 and a. It

The answer to Statistics/psychology

A Multiple Regression was conducted with hopefulness and therapist's experience as predictors and change in symptoms as the outcome variable. From these results you could say: a. Hope and therapist's experience are important and powerful predictors of change in symptoms b. Hope is an important and powerful predictor of

The High-Low Method and Regression Analysis

Please see the attached file for background information. Using the high-low method and regression analysis, determine the variable and fixed costs of the in-house meal service. ------------------- The Brenham General Hospital was approached by Health Food, Inc. (HFI) which specializes in the preparation of meals for ins

Cost Estimation, High-Low Method, Regression Analysis

Please see the attached file for additional information. The results of a simple regression analysis using all 12 data points yielded an intercept of $11,854.55 and a coefficient for the independent variable of $126.22 (R-squared = .19, t = 1.5, SE = 974). Problem Calculate the quarterly forecasts for 2004 using the hig


7. Shown below is a partial computer output from a regression analysis. (see attached file) a. Use the above results and write the regression equation. b. Compute the coefficient of determination and fully interpret its meaning. c. At a = 0.05, test to see if there is a relation betwee

Interpreting Regression Analysis

I've calculated the Regression Analysis Table and need help interpreting the following: Analyze the effect of sack yardage has on quarterback rating. a. Does the sack yardage predict the QB rating? b. What is the regression equation and is this a significant equation? c. What is your prediction for the QB rating of a

What factors appear to influence beverage sales at the Westar?

(See attached file for full problem description) The Westar hotel, a 250-room business hotel located in a resort area of the Colorado Rockies, has two lounges on its premises: the Pour Nous Lounge, a pub-style lounge that seats about 50, and Gaiete, a 200-seat nightclub. Jane Bartley is a staff analyst for Westar's corpora

More Statistics

(See attached file for full problem description) --- The owner of Maumee Ford-Mercury wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year. a. If we want to estimate selling price based on the age of t

24 Assorted Statistic Problems

(See attached file for full problem description) --- Question 1 Lilo is creating an experiment to determine mean differences in weight loss (ratio level variable) of obese children as a result of participation in different weight loss programs (nominal variable with three levels: Atkins, South Beach, and Weight Watchers).

Multiple Regression

The following information is a multiple regression problem. I need to explain what the regression analysis is explaining. It is using ANOVA, R-Squared, Adj R, b, t, f, etc. I have started but i want to make sure that i am heading in the right direction. If I could have someone explain to me exactly what the regression states

Regression, test of hypothesis, correlation

1) Car dealership chain owner wants to increase the car sales of his chain. He wants to determine which factors influence the sales performance. Owner thinks that the following factors have a significant impact on sales performance: X1 = number of years of experience as a car sales person X2 = age Sales performance is mea

Research and Evaluation

Refer to the Real Estate data, which reports information on homes sold in Denver, Colorado, last year. a. Let selling price be the dependent variable and size of the home the independent variable. Determine the regression equation. Estimate the selling price for a home with an area of 2,200 square feet. Determine the 95 perc

Ratio to Moving Average Method

I need help understanding the formula to use for this problem. Also, can this be calculated using a function in Excel? An analyst want to use the ratio-to-moving average method to forecast a cmpany's sales for the next few quarters. Beginning in Quarter 3 of 2002, the analyst collects the following sales data (in millions of

Simple Regression with Variable Swapping

Work through a second simple regression by switching the dependent and independent variables used in the first regression. Make very specific comments and give reasons regarding any similarities or differences in multiple R and the ANOVA.

Simple regression calculation

Work through a simple regression calculation using intrinsic job satisfaction and extrinsic job satisfaction. Select thirty data points to use for each group. Determine which group will be the dependent variable and which the independent variable. Will the final answer be a complete model equation.? If so please show the equatio

To determine line of regression and predict the value for a given value of x

Correlation and Regression -------------------------------------------------------------------------------- Use the data in the accompanying table. The data came from a study of ice cream consumption that spanned the springs and summers of three years. The ice cream consumption is in pints per capita per week, price of the ic

Regression of Labor Cost and Batch Size

An accountant wishes to predict direct labor cost (y) on the basis of the batch size (x) of a product produced in a job shop. Using labor cost and batch size data for 12 production runs, the following Excel Output of a Simple Linear Regression Analysis of the Direct Labor Cost Data was obtained. The scatter plot of this data is

Plantworld: develop a regression model to explain and predict supplies expense

Plantworld is a large nursery and retail store specializing in house and garden plants and supplies. Tito Nieves, the assistant manager, is in the process of budgeting monthly supplies expense for the next 12 months. He assumes that in some way supplies expense is related to store hours, sales dollars or employee hours worked


In regression analysis, the omission of one or more significant explanatory variables from the regression equation constitutes: a multicollinearity b autocorrelation c specification error d heteroscedasticity e none of the above