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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?
In an updated GDP that contains household production, how would the purchase of a car or appliance for household use be treated? A car or appliance would be treated as a househ
assignment
1. Mrs Munyarryun, 67 years, has been retired from her work for two years. She rings for advice about urinary incontinence, a problem she has experienced over the last 6 months. Wh
fundamental problems
Volume of Trade: It relates to the size of international transactions. Since a large number of commodities enter in international transactions and their aggregate can be found
Choosing Inputs How to minimize cost for the given level of output. We can do so by combining Isocosts with Isoquants Producing a
I wont final Exam
How much does it cost
Problem: (a) Given TR = P×Q, Show that Note: TR is total revenue, P refers to price, Q refers to quantity demanded, MR denotes marginal revenue, and ε d shows the p
How many half-lives are required for the concentration of reactant to decrease to 1.56% of its original value?
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