Data Mining 95-791 Spring 2013 Lecture #8 Predictive analytics: Regression Artur Dubrawski awd@cs.cmu.edu This unit • Good-old correlation scores revisited • Locally weighted regression – As an approximator of non-linear functions – As a framework for active/purposive acquisition of data 95-791 Data Mining Lecture #8 Slide 2 Copyright © 2000-2013 Artur Dubrawski Correlational scores of association between attributes of data • • • • Linear Rank Quadratic …. Would not it be
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A regression analysis of the number of establishments in the florists industry Industry Description Operators in the United States florists industry retail cut flowers‚ floral arrangements and potted plants. They purchase these products from domestic and international firms and sell them mostly to the local population. Currently‚ the traditional forists suffer from severe competition form online stores and supermarkets. This results in a decreasing
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Problem 2.22: a. Formulate an LP model for this problem X1 = quantity of ornate‚ decorative wood frame doors produced X2 = quantity of windows produced Max Total Profit: 500X1+400X2 X1+0.5*X2≤40 0.5*X1+0.75*X2≤40 0.5 X1+X2≤60 X1‚ X2≥0 b. Sketch the feasible region Please refer to the graph below c. What is the optimal solution After calculations using solver in excel‚ we figure out that the max total profit available is $26‚000.00‚ when produce a mix of 20 units of doors and 40 units of windows
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Due in class Feb 6 UCI ID_____________________________ MultipleChoice Questions (Choose the best answer‚ and briefly explain your reasoning.) 1. Assume we have a simple linear regression model: . Given a random sample from the population‚ which of the following statement is true? a. OLS estimators are biased when BMI do not vary much in the sample. b. OLS estimators are biased when the sample size is small (say 20 observations)
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Demand Estimation by Regression Method – Some Statistical Concepts for application ( All the formulae marked in red for remembering. The rest is for your concept) In case of demand estimation working with data on sales and prices for a period of say 10 years may lead to the problem of identification. In such a case the different variables that may have changed over time other than price‚ may have an impact on demand more rather than price. In order to void this problem of identification what
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Project: Multiple Regression Model Introduction Today’s stock market offers as many opportunities for investors to raise money as jeopardies to lose it because market depends on different factors‚ such as overall observed country’s performance‚ foreign countries’ performance‚ and unexpected events. One of the most important stock market indexes is Standard & Poor’s 500 (S&P 500) as it comprises the 500 largest American companies across various industries and sectors. Many people put
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Tiffany Camp ECO-250 Volker Grzimek Regression Analysis of Work Hours in Relation to GPA This research investigated the affects of working extra hours in a labor position on students’ GPAs each semester at Berea College. It was my belief that students who worked more hours were more likely to have lower GPAs due to their studying abilities and opportunities being compromised as a result of working too long (a negative correlation or trend between GPAs and hours worked each week). For
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MATH 231: Basic Statistics Homework #5 – Correlation and Regression: 1). Bi-lo Appliance Super-Store has outlets in several large metropolitan areas in New England. The general sales manager aired a commercial for a digital camera on selected local TV stations prior ro a sale starting on Saturday and ending on Sunday. She obtained the information for Saturday-Sunday digital camera sales at the various outlets and paired it with the number of times the advertisement was shown on local TV stations
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STUDENT DETAILS ________________________________________ ACAP Student ID: Name: Course: BASSIX ASSESSMENT DETAILS ________________________________________ Unit/Module: Interpersonal Communication BESC1011 Educator: Assessment Name: Literature search‚ note taking and referencing using the APA style Assessment Number: 1 Term & Year: Term 3‚ 2013 Word Count: DECLARATION I declare that this assessment is my own work‚ based on my own personal research/study
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au/webapps/portal/frameset.jsp?tab=courses&url=/bin/common/course.pl?course_id=_111213_1&frame=top • You assignment must be in a Word doc format – no pdfs! • When answering questions‚ wherever required‚ you should cut and paste the Excel output (eg‚ plots‚ regression output etc) to show your working on your assignment. • You are required to keep a hard copy and an electronic copy of your submitted assignment to re-submit‚ in case the original submission is lost for some reason. Important Notice:
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