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UPenn | STAT 621

21 sample documents related to STAT 621

• UPenn STAT 621
Department of Statistics The Wharton School University of Pennsylvania STAT 621 Fall 2007 Business Analysis Using Regression Syllabus Instructors: Ed George Mark Low Robert Stine Richard Waterman edgeorge@wharton lowm@wharton stine@wharton waterman@

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 8 1 Categorical Predictors and Interaction Preliminaries Supplemental practice problems Multiple regression practice questions Feedback and questions Please continue to use the in-class for

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 7 1 Categorical Predictors Administrative Items Deliverables Postpone Assignment #2 until Friday at 3 p.m. Further questions regarding the assignment? Well do the partial F ratio in an exam

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 12 Analysis of Variance Preliminaries Project is due today at 4 p.m. Office hours Today 3-5:30 Assignment #3 Postponed until Thursday, 4 p.m. Group project, turn in one for the team (as on

• UPenn STAT 621
Statistics 621 Robert Stine FedEx Categorical Analysis Regression with a Single, Two-Level Categorical Predictor FedEx is promoting a type of service called courier packs. Was the sales effort more effective for those customers who were previously

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 4 1 Multiple Regression Preliminaries Grading on this and other assignments Assignment will get placed in folder of first member of Learning Team. Will post solution set this week. Please

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 9 1 Categorical Predictors, Building Regression Models Preliminaries Supplemental notes on main Stat 621 web page Steps in building a regression model: see class web page. Glossary of terms

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 10 -1- Building a Regression Model Preliminaries Practice questions on my web page Review questions covering regression with categorical predictors. Office hours Monday, Wednesday 3-5:30, T

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 3 1 Prediction and Confidence Intervals in Regression Preliminaries Teaching assistants See them in Room 3009 SH-DH. Hours are detailed in the syllabus. Assignment #1 due Friday Substantia

• UPenn STAT 621
Statistics 621 Fall, 2001 Robert Stine 1 Logs Transformation in a Regression Equation Logs as the Predictor The interpretation of the slope and intercept in a regression change when the predictor (X) is put on a log scale. In this case, the interce

• UPenn STAT 621
Sample Executive Summaries Executive Summary 1 The most important factors that affect average costs in the company are the number of stamp operations, the cost of materials, the managers in charge of production and, as a fixed cost factor, the numb

• UPenn STAT 621
Statistics 621 Robert Stine Practice Questions: Multiple Regression An auto manufacturer was interested in pricing strategies for a new vehicle it plans to introduce in the coming year. The analysis that follows considers how other manufacturers pri

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 11 -1- Diagnostics for Multiple Regression Preliminaries Office hours Wednesday 3-5:30, Friday from 9-12 noon. E-mail Review of Key Points from Lecture 10 Tukey-Kramer procedure Use this

• UPenn STAT 621
Class 7 Categorical Factors with Two or More Levels 187 Once again, the simplest way to interpret this interaction term between Position and YearsExper is to write out the fitted equation under different conditions. Lets focus on the effect of yea

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 2 1 Assumptions in Regression Modeling Preliminaries Preparing for class Read the casebook prior to class Pace in class is too fast to absorb without some prior reading Identify questions,

• UPenn STAT 621
Statistics 621 Robert Stine Collinearity in Regression An Example with Changing Signs A marketing project has identified a list of affluent customers for its new PDA. Should it focus on the younger or older members of this list? To answer this que

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 6 1 Collinearity and Multiple Regression Preliminaries Deliverables Postpone Assignment #2 until Friday at 3 p.m. Academic reps / quality circle Need to hear from you so we can meet Review

• UPenn STAT 621
Statistics 621 Robert Stine Practice Questions: Multiple Regression with Categorical Predictors A sample of 43 active women (red) and 44 active men (green) who exercise at a local gym was used to study differences between men and women in physical a

• UPenn STAT 621
Fall Semester, 2001 Robert Stine Statistics 621 Lecture 5 1 Interpreting Multiple Regression Preliminaries Project and assignments Hope to have some further information on project soon. Due date for Assignment #2. Review of Key Points Outliers

• UPenn STAT 621
Statistics 621 Robert Stine Collinearity in Regression Time Trends and Causation A rapidly growing firm would like to improve its allocation of advertising dollars between television and print media. Television now gets the largest share. Should thi

• UPenn STAT 621
Statistics 621 Robert Stine Practice Questions: Simple Regression A service firm has experienced rapid growth. Because of this growth, some of the employees who handle customer calls have had to work additional hours (overtime). The firm is concerne