# Recent questions in Econometrics and Mathematical Economics

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# Hi everyone. Exercice on the book Wooldridge. Can you help to resolve this this

consider taking a large random sample of workers at a given point in time. let if person called in sick during the last 90 days, and zero otherwise. let be a vector of individual and employer characteristics. let be the number of cigarettes individual smokes per day (on average). (i) explain the underlying experiment of interest when we want to examine the effects of cigarette smoking on workdays lost; (ii) why might be correlated with unobservable affecting ?; (iii) one way to write the model of interest is where is a subset of and is an unobservable variable that is possibly correlated with . what happens if is ignored and you estimate the probit of on , ? (iv) can have a conditional normal distribution in the population? explain. (v) explain how to test whether is exogenous. does this test rely on having a conditional normal distribution? (vi) suppose some of the workers live in states that recently implemented no-smoking laws in the workplace. does the presence of the new laws suggest a good iv candidate for ?
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# How we discover Specification errors in Econometric models?

Specification error is to leave out important variable or adding irrelevant variable in the model.
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# Short and long term equation

**Hello,**Trend assumption: Linear deterministic trend (restricted)Series: CE E G Lags interval (in first differences): 1 to 1Unrestricted Cointegration Rank TestHypothesized Trace 5 Percent 1 Percent No. of CE(s) Eigenvalue Statistic Critical Value Critical Value None ** 0.943976 63.45509 42.44 48.45 At most 1 0.682073 23.10735 25.32 30.45 At most 2 0.396247 7.064266 12.25 16.26 *(**) denotes rejection of the hypothesis at the 5%(1%) levelTrace test indicates 1 cointegrating equation(s) at both 5% and 1% levelsHypothesized Max-Eigen 5 Percent 1 Percent No. of CE(s) Eigenvalue Statistic Critical Value Critical Value None ** 0.943976 40.34774 25.54 30.34 At most 1 0.682073 16.04309 18.96 23.65 At most 2 0.396247 7.064266 12.25 16.26 *(**) denotes rejection of the hypothesis at the 5%(1%) levelMax-eigenvalue test indicates 1 cointegrating equation(s) at both 5% and 1% levelsUnrestricted Cointegrating Coefficients (normalized by b'*S11*b=I): CE E G @TREND(01) 0.309809 -0.026339 -0.003360 6.357138 5.323801 -0.019033 -0.002098 1.986750 3.174429 -0.002514 -0.002042 0.606928 Unrestricted Adjustment Coefficients (alpha): D(CE) 0.122194 -0.025537 0.060332 D(E) 18.17960 26.80285 -15.71174 D(G) -327.9016 1305.121 1094.855 How can I write short term and long term correlations.
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# What are the cons of globalization?

I have to give a presentation on globalization. I want a slide that explains pros of globalization. Please enlist at least five of them.
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