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Problem:
(a) Why is an error term added to a regression and explain its importance in the OLS procedure?
(b) Suppose we have a linear equation with a constant term, one explanatory variable and an error term, show in details the steps required, using the OLS procedure, to derive the estimates of the constant term and that of the coefficient of the explanatory variable.
(c) Suppose a researcher wants to test whether the returns on a company stock (y) show unit sensitivity to two factors (factor x2 and factor x3) among three considered. The regression is carried out on 144 monthly observations. The regression is: Yt = β1 + β2x2t + β3x3t + β4x4t+ ut
i) What are the restricted and unrestricted regressions?
ii) If the two RSS are 502.4 and 302.8 respectively, perform an F-test of the restriction, showing all the required steps.
(d) How are the t-test and the F-test related and describe in which cases they cannot be applied?
(a) Differentiate between a command economic system and a laissez-faire. (b) Assess to what extent it is advantageous for an economy when it moves from a controlled to a free-e
What actions could a government take in order to keep the price above market equilibrium? There are four basic possibilities here; 1) Minimum price; 2) A tax on the good
marginal utility is applied on money or not
Question 1: Compare and contrast between perfect competition and monopoly. Which of the two types of market structures is efficient? Question 2: Prepare a short notes
a more simple explanation of the group equilibrium in the short and long run
Marketing Economies: These are derived from the bulk purchasing of inputs and bulk distribution of outputs. A large firm is able to buy its raw materials in larger quantities
Ask question # how do you formulate a demand and supply equations when you a table of prices, quantity demanded and supplied?
what is the law of diminishing marginal product? explanation with the help of proper schedule and diagram.
explain two theories of economic rent
Wage Labour: A form of work in that employees perform labour for others, under their direction, in return for salaries orwages. Employer controls and owns the product of the labour
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