4. Suppose that you want to estimate the price elasticity of quantity demanded for = a + B, log(Phe)+u (1),where Q is the quantity log(Qhe ): beef using demanded of beef and Pee is price of beef. You try to decide whether you should include log price of chicken and log price of pork in the regression as well, i.e., whether to estimate log(Qbeef) = a + B, log(Pheef ) + ß, log(PPork ) + ß, log(Phcken ) + u (2)instead. Which of the following is correct? a) Choose (2) if its R squared is higher. b) Do an F test to test the joint significance of the estimated P2 and B3. If you reject the null, choose (2). c) Do an F test to test the joint significance of the estimated B2 and Þ3. If you fai to reject the null, choose (2). d) Both a) and b) are correct.
4. Suppose that you want to estimate the price elasticity of quantity demanded for = a + B, log(Phe)+u (1),where Q is the quantity log(Qhe ): beef using demanded of beef and Pee is price of beef. You try to decide whether you should include log price of chicken and log price of pork in the regression as well, i.e., whether to estimate log(Qbeef) = a + B, log(Pheef ) + ß, log(PPork ) + ß, log(Phcken ) + u (2)instead. Which of the following is correct? a) Choose (2) if its R squared is higher. b) Do an F test to test the joint significance of the estimated P2 and B3. If you reject the null, choose (2). c) Do an F test to test the joint significance of the estimated B2 and Þ3. If you fai to reject the null, choose (2). d) Both a) and b) are correct.
Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
Problem 3TI: Table 6 shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to...
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