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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?
Sample Survey and Test Marketing: Under this method some representative households are selected on random basis as samples and their opinion is taken as the generalized opinio
Effects of inflation: On Income Earners:Those on fixed incomes or assets (fixed in nominal terms) lose. However, those on incomes, which are directly related to the price leve
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What are externalities? Give an example of positive and negative externality and explain why the market outcomes are inefficient in the presence of externalities
Strong Domestic Economy: We have to realise that healthy export sector can be built up only on a strong and efficient domestic economic structure. A sound domestic economy is
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#question.what is the periodc clasification?.
1. Assume that the market for wheat is perfectly competitive. Suppose the demand curve for wheat is given by: QD = 200 – 2P where QD is the quantity demanded, in bushels, and P i
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