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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?
I don''t really understand how scitovsky contour is formed.
explain the fundamental task of economic system usin tomatoes as an example
1. Ayanna grows herbs. Last year she grew 2,000 pounds of herbs in a year while using 250 square feet of land and 1 worker. This year she doubled her land to 500 square feet, doubl
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Reorder Point Techniques Systems based on reorder points assume that demand is uniform and predictable and that there is no true identifiable time of need. Hence, stock must a
Assume the United States exports 1000 computers at a price of $3000 each and imports 15 UK autos at a price of 10000 pounds each. Assume that the dollar/pound exchange rate is $2 p
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Question 1: (a) Using examples, explain the difference between time-series, cross-sectional, and panel data. (b) Formulate a simple linear equation, and carefully explain
can i get a case study on share market or any other company about their exceptions to the law of demand?
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