Serial correlation using Durbin Watson

Using the Durbin-Watson test for first-order serial correlation. Determining whether the results are significant. Detecting impure serial correlation.

Basic question about datasets. Not a

I'm working with a cross-section of the NLSY97 (using the program Stata). I'm a new econometrics grad student. I'm trying to make sure I understand how these datasets work but I'm almost embarrassed to ask this question: the observations are linked somewhere in the dataset right? What I mean is, its not just statistics on the answers to individual questions, like it appears in the codebook. The program must know all the answer of a particular oberservation number (that is, a particular respondent), right? Otherwise, if you wanted to remove respondents who answered a particular way on one question ("question A" lets call it) from another question ("question B") you wouldn't be able to ... click for more

Interpret regression

Have this regression with the following results: y Coef. Std. Err. t P>t [95% Conf. Interval] age -.0313208 .0048588 -6.45 0.000 -.0408444 -.0217972 age2 .0005537 .0000652 8.50 0.000 .000426 .0006815 black -.9694474 .0396784 -24.43 0.000 -1.04722 -.8916744 female .4468672 .0279172 16.01 0.000 .3921472 .5015872 child -.6196008 .062625 -9.89 0.000 -.7423509 -.4968507 educdec .0215436 .0053945 3.99 0.000 .0109699 .0321172 inc .0000364 3.85e-06 9.45 0.000 .0000289 .000044 fam -.0413412 .008681 -4.76 0.000 -.0583566 -.0243258 disea .0372654 .0022947 16.24 0.000 .0327675 .0417632 physlm .4972644 .0470732 10.56 0.000 .4049971 .5895317 xghindx -.0098738 .0010987 -8.99 ... click for more

Opportunity cost and accounting cost

I am self stuying and I am having a bit of problem solving this problem. I am try using linear programing but the response I am getting is puzzling me. I would like to compare my answers with yours. 1. You are the manager of a Fortune 500 hotel chain and must decide where to locate a new hotel. Based on tax considerations, your accounting department suggests that Atlantic City is the best choice, followed closely by Las Vegas. In particular, your current year tax savings from locating in Atlantic City are $4 million but only $3 million in Las Vegas. Your marketing department, on the other hand, has provided you with sales estimates that suggest that the present value of the gross (of... click for more

I have this problem I need to verify the answer

You are the manager of a firm that specializes in selling exotic animals to zoos around the world. Your goal is to determine the number of baby zebras (Z) that must be born on your firm’s farms each month in order to maximize profits. The total benefits (revenues) and costs to your firm of producing various quantities of zebras is given in the first three columns of the table below. Based on this scenario, complete the table and answer the accompanying questions; (see data chart in attached file) a. What level of zebra births maximizes net benefits? b. What is the relation between marginal benefit and marginal cost at this level of Z? c. Graph the total cost and total benefit c... click for more