TECHNOLOGY AND INNOVATION Degree Level 1 Quantitative Skills Correlation & Regression Intake : Lecturer : Date Assigned : Date Due : 1. Suppose that a random sample of five families had the following annual income and savings. Income (X) Savings (Y) (£’000) (£’000) 8 0.6 11 1.3 9 1.0 6 0.7 5 0.3 (a) Obtain the least square regression equation of savings (Y) on income (X) and plot the regression line on a graph. (b) Estimate the savings if the family income is
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in the United States Question 1. Estimate the demand for soft drinks using a multiple regression program available on your computer. 2. Interpret the coefficients and calculate the price elasticity of soft drink demand 3. Omit price from the regression equation and observe the bias introduced into the parameter estimate for income. 4. Now omit both price and temperature from the regression equation. Should a marketing plan for soft drinks be designed that relocates most canned drink
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| 70 | 29 | E | 22 | 6 | F | 27 | 15 | G | 28 | 17 | H | 47 | 20 | I | 14 | 12 | J | 68 | 29 | | | | | | | a) draw a scatter diagram of number of sales calls and number of units sold b) Estimate a simple linear regression model to explain the relationship between number of sales calls and number of units sold y=2.139x-1.760 Number of units sold=2.139Number of units sold-1.760 c) Calculate and interpret the coefficient of correlation r=0.853=0.9236 (There
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relationship between CREDIT BALANCE and SIZE 2591+ 403.221 Determine the coefficient of correlation. Interpret. .75/ r-sq(56.6%). There is a mild correlation. Determine the coefficient of determination. Interpret. 56.6% Test the utility of this regression model (use a two tail test with α =.05). Interpret your results‚ including the p-value. P-value=0. Reject the null hpothesis. T value 7.9147 Based on your findings in 1-5‚ what is your opinion about using SIZE to predict CREDIT BALANCE? Size
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Analysis on Inflation Regression Model Done by: Hassan Kanaan & Fahim Melki Presented to: Dr. Gretta Saab Due on: Tuesday‚ January 25‚ 2011 Outline: I. Introduction A. Definition of Variables B. Type of Variables II. Background and Literature Review A. Inflation and Unemployment B. Inflation and Oil Prices C. Inflation and GDP D. Inflation and Money Supply III. Analysis A. SPSS 17 analysis B. E-Views 5 analysis IV. Conclusion and Recommendation V. Indexes
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Revitalizing Dell: Forecast Dell’s 2009 and 2010 revenues • Work through the “Proposed Steps” of Case 9-1 Revitalizing Dell in your textbook – Make lagged drivers – Use correlation to pick a lagged driver – Build a linear forecast model using regression‚ perform DW test on residuals – Repeat if residuals do not pass DW test • Forecast revenues and generate 95% prediction intervals for 2009 and 2010 6 Revitalizing Dell: Bright forecast 7 Revitalizing Dell: Harsh reality 8 Revitalizing
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Javier Jorge Dr. Moss Managerial Analysis April 11th‚ 2012 Project 3 We are given a linear regression that gives us an equation on the relationship of Quantity on Total Cost. As stated in the project‚ the regression data is very good with a relatively high R2‚ significant F‚ and t-values but we can’t use this model to estimate plant size. When we perform a simple eye test on the residual plot for Q a trend seems to form from positive to negative and back to positive. When we also
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Introduction to Medical Terminology Contents 1. Human Anatomy 3 1.1. 10 Major Body Systems 3 1.2. Body Planes 7 2. Components of Medical Terminology 7 3. Basic Medical Abbreviations 20 3.1 Symbols 27 3.2 Directional and Positional Terms 28 1. Human Anatomy 1.1. 10 Major Body Systems | Skeletal System | The main role of the skeletal system is to provide support for the body‚ to protect delicate internal organs and to provide attachment sites for the
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1. Affirmative Action destroys the idea of meritocracy and students should be chosen based on their intelligence instead of their race or gender. “At the University of Wisconsin‚ the median composite SAT score for blacks who were admitted was 150 points lower than for whites and Asians and the Latino median SAT score was 100 points lower”. This quote shows how Affirmative Action destroys the idea of meritocracy and applicants are mainly chosen on someone’s race not intelligence. (http://brandongaille
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13.1 17.62 18.23 20.01 21.52 14 13.26 13.22 15.84 17.79 22.18 15.46 16.26 8.09 5.64 11 10.55 18.52 17.86 14.05 12.75 8.79 9.13 11.6 13.87 1. Carry out the regression and find the for the stock. What is the regression equation? 2. Does the value of the slope indicate that the stock has above average risk? (For the purpose of this case assume that the risk is average if the slope is in the range ‚ below average if it is less than
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