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Applied Econometrics BE5103 Tutorial 1 Q1 a) In the simple OLS regression estimation it is not possible that all actual independent Yi values lie above the estimated regression line. This is because OLS minimizes SUM ê2 , the residual , ê, is the difference between the actual Yi and the predicted Yi and has zero mean. In other words, OLS calculates the slope coefficient so that the difference between the predicted Yi and actual Yi is minimized. The OLS estimates of the βs: Are unbiased – the

relevant data are shown in the following table: Unit Number Time (Hours) 3 11.25 12 9.05 32 7.02 56 6.1 80 5.2 a. Construct a scatter diagram showing the hours against the unit numbers. Is the relationship between hours and unit numbers linear or

Introduction In spatial analysis, the aim is often to identify the natural relationship between pairs of variables. And the most common type of analysis used to achieve this aim is regression (Fotheringham & Rogerson, 2009, p. 243). In a conventional linear regression model, we use a single equation to assess the overall relationships between a single dependent and more independent variables across space. An important assumption underlying this approach is that the relationships of interest are stationary

The Effects of Unemployment on Crime Rates Introduction Crime and poverty often seem to go hand in hand in the modern world, or so is the perception. With poverty rates edging higher this is even more important in our modern day. The unemployment rate is one of the key indicators of the health of our economy. The standard of living for most people falls greatly once they have reached the poverty rate, which makes people live nervously, frantically, and gives greater incentive for them to commit

3. Data and methodology 3.1. Sample selection and resource of data In this study, we tested the empirical effect that a firm’s capital structure has on its corporate value by using a multiple regression estimator framework. All the financial data are obtained from the China Stock Market and Accounting Research (CSMAR) Database. The sample used for this study are automobile firms listed on the A-share section of Shanghai and Shenzhen Stock Exchanges. Because of significant differences between A and

Introduction For many years, the use of laboratory tests has been very prominent when researching the relationship between physiological variables and endurance training. However the results have fluctuated from study to study. This could be due to the use of different specific physiological variables but also due to the activity levels of the participants used. Oxygen intake is a highly studied compartment of sports science and particularly physiology due to its direct correlation with cycling

Every year the marketing age of broilers decreases by an average of 0.75 days for the same performance. The problem is recognized as optimizing cost factor, which depends on constraints (ingredients of the feed) and could be solved by Deterministic Linear Programming Model, (DLPM) or Mixed Integer Programming, (MIP). This trend is likely to continue in the same direction for the coming years. Nutrition plays a vital role in enabling this improvement. As the feed cost represents an expensive input (70-80%

Modelling Production Scheduling Technical Report Title: “Hi-Fi Amplifiers’ Model” Christos Daramilas Student ID: B511130 Introduction It is acknowledged that real-world situations could be represented by well structured and formulated Linear programming models. These mathematical tools contribute significantly to business activities and can be used to tackle problems that constantly arise. Franco Sounds is a company specialised in manufacturing Hi-Fi Amplifiers of top quality and its

Introduction The study of Rapp and Chao (2000) aimed to understand the relationship between appraisals of strain and of gain and psychological wellbeing of family caregivers of dementia patients. The study addressed the gaps in the literature related to applying caregivers’ appraisals of strains and of gains to predict both negative and positive affect on caregivers’ wellbeing. Thus, Rapp and Chao (2000) proposed three hypotheses. First, the study hypothesized that the greater caregivers appraise

∑_(i=1)^n▒〖β_i Control〗_i2012 +ε_i (2) Before using the regression analysis, we have conducted test for the classical assumptions of linear regression model, including multicollinearity, heteroscedasticity and wrong functional. Result Based on the data analysis, the result of study will be divided into two parts, including descriptive statistic and regression analysis. Descriptive