Econ 120B points --------------------------------------------------------------------------- Date: Mon, 8 Jun 1998 11:12:16 -0700 (PDT) From: Hue T Ly 2 points Pg. 234 last paragraph: "(MAPE) error" should be "error (MAPE)" pg. 238 3rd paragraph: "Model C" should be "Model B" Date: Tue, 19 May 1998 11:16:12 -0700 (PDT) 1/2 point From: Hue Ly there is a typo in the book on Page 191 in the second paragraph. The word extremely is mispelled "extremeley". --------------------------------------------------------------------------- Date: Mon, 8 Jun 1998 09:34:26 -0700 (PDT) From: Susan Tchang 1 point Page 151.(Appendix 3A.5) Line 15 from the top. ... that the OLS estimator "is" indeed BLUE and hence most eff.... should be "is" instead of "in". Susan Tchang --------------------------------------------------------------------------- Date: Sun, 7 Jun 1998 17:37:31 -0700 (PDT) From: Chuckles To: ramu@weber.ucsd.edu I believe that there may be some error in your book. On first line of page 231, there should be a "the" in front of the word "conlusion". charles chung 1 point --------------------------------------------------------------------------- Date: Sat, 06 Jun 1998 23:52:52 -0700 3 points From: Jeff McNeill I just noticed that on pages B-14 and B-15 the variable for price of water is PRWATER is the three places it is mentioned but back in the problem on page 247 is is just PRWATR. Also the SDWATER variable is different on page B-15 then in the problem. --------------------------------------------------------------------------- From: NMaroutsos 1 point Date: Wed, 6 May 1998 15:22:04 EDT Page 116 Section 3.8 At the bottom of the Page it reads, This implies that P(-t* Econ 120C Subject: correction in book bonus point 1/2 Page 245, paragraph 6, line 1, "identified" is misspelled. Date: Wed, 22 Apr 1998 16:01:44 -0700 (PDT) 120C 1 point From: Wilson Jui On Page 331 after equation 7.17, the next paragragh starts out beta1DX represents the interaction term. I think this should be beta2. Please email me if I do or do not receive pts. I am in your 120c class. Date: Sun, 17 May 1998 17:21:40 -0700 (PDT) 1 point From: Wilson Jui Professor Ramanathan I think I found an error on Page 390, under White's Test, Step 2 the line should read uhat =Y- beta one, not equals to. If I am correct please email me back. My name is Wilson Jui and my address is wjui@ucsd.edu If you could also explain the weight of a bonus point in terms of the final point total, is it like getting a extra point on a midterm? Thanks --------------------------------------------------------------------------- Date: Sat, 18 Apr 1998 14:54:55 EDT 120C, bonus point 1/2 Hello. My name is Renee Zew and I am enrolled in the Economics 120 C class. I think that I found a typo in the book. On Page 325, in the second line of section 7.2, it says, "yet Y". Instead, I think that it is supposed to be "let Y." --------------------------------------------------------------------------- Date: Mon, 20 Apr 1998 22:57:09 -0700 120C From: Gary Chen bonus point 1 I think I have spotted an error in the book, but I am not sure. If I am wrong, please forgive me for wasting your time. In any case, the error occurs on Page 71. On line 12 the sentence reads: "For a minimum, the second-order condition is that F'(x) be positive at the point at which F'(x) = 0." I believe that an extra dash is missing from the first F'(x). I believe that it should read ". . . , the second-order condition is that F''(x) be positive. . ." Then again, I could be wrong. Please let me know if I am correct in pointing out this error. And hopefully you are still handing out extra credit for spotted typos. --------------------------------------------------------------------------- Date: Tue, 21 Apr 1998 22:17:20 -0700 (PDT) From: Cheryl Cua 120C 1/2 point p. 325 "middle-age" should be "middle-aged" since the word is an adjective in the fifth line of section 7.2 Date: Mon, 27 Apr 1998 09:27:36 -0700 (PDT) From: Cheryl Cua 120C 1/2 point On p. 329, in the practice problem 7.5, the word "middle-age" should be "middle-aged" - I think. --------------------------------------------------------------------------- Date: Wed, 22 Apr 1998 16:15:32 -0500 120C 1 point From: Ben Miller I believe there is a typo on Page 321 in the textbook. At the top, it lists (n = 46) whereas, in appendix D, DATA 7-2, it states the number of observations to be 49. I think it is the d.f. which is 46 not n. Please note this discrepancy. date: Wed, 13 May 1998 17:35:53 -0500 120C 1 point From: Ben Miller I believe that on Page 395 of the textbook there is a typo. In the middle of the 2nd paragraph from the bottom it states Var(u) = sigma-squared t = sigma-squared*POP. Shouldn't POP also be squared, as shown by (8.8) on the previous Page with regard to Z??? --------------------------------------------------------------------------- From KMizokoshi@aol.com Wed Apr 22 15:40:34 1998 120C 1 point To: ramu@weber.ucsd.edu My name is Keiko Mizokoshi It is on Page B-17, I think it is "property 4.3" instead of "property 4.4" Date: Thu, 23 Apr 1998 20:19:58 EDT 1 point On Page B-19, answer to exercises 7.2 a, it should be 1960 -1981, not 1960-1991. Also, I have a question about this answer. Last line on Page B-19, it says that "for the 1986-1988 period, D1 and D86 are both 1......" Isn't it D2 instead of D1? If it is D1=D86=1, then I don't understand how it calculated both price and income elasticities. If it is D2=D86=1, then we need a numerical value for b9 in Model D in order to calculate a price elasticity for period 1986-1988. Date: Wed, 20 May 1998 21:00:50 EDT 1 point I have found another typo while I was studying really hard. It is on Page 478, problem 9.6 . The OLS model is missing Ln(Y) term (after b3). My name is Keiko Mizokoshi --------------------------------------------------------------------------- Date: Wed, 22 Apr 1998 18:30:14 -0700 (PDT) From: Phuoc Le on Page 332, line after equation 7.20, Regress has three s's 1/2 point On Page 332, line 14: "when all the [alpha]'s..." 1 point should just be "when all the [alpha]s..." On Page C-13 in Appendix C, 9th line from BOTTOM: 1/2 point Where it said "[Note: The retrieved value is a scalor...", scalor is misspelled. (Should be scalar). Date: Tue, 5 May 1998 16:40:46 -0700 (PDT) 1 point From: Phuoc Le On Page 386 of the Fourth Edition (Intro to Econometrics), there is a typo: Line 1: Where it says Reject H0: a(i) = 0 for (a = 2, 3, ... p), it should be ^^^ Reject H0: a(i) = 0 for (i = 2, 3, ... p) ^^^ (a's are alpha's). --------------------------------------------------------------------------- Date: Thu, 23 Apr 1998 23:50:51 -0700 From: Judd Kuehling 120C 1/2 point Is the 3rd line of Page 266 spposed to be "disposable" not "disposal"? --------------------------------------------------------------------------- From: "Sebastian Badali" 120C 1 point Date: Wed, 29 Apr 1998 18:28:26 -0700 The second typo is on Page 388 at the bottom of the Page (the generating of the LM stat for the Harvey-Godfrey Test). Under the ESL command "?genr LM3= $nrsq" you have the correct program response of "Generated var. no. 10 (LM3)". But the text also has the response of "For Chi-Square (2), area to the right of 35.302998 is < .0001". This second response should be for the command "?pvalue 3 2 LM3". Thus you see when you actually get to this step the response is shown again. So there is a double print of the response "For Chi-square (2), the area to the right of 35.302998 is < .0001". Date: Mon, 11 May 1998 16:45:01 -0700 Econ 120C - 1 point Hello, my name is Sebastian Badali and my email address is sbadali@ucsd.edu. I found two typos, both on Page 400. 1) According to Table 8.3, equation 8.11 on Page 400 should be lnsalary= 3.848+0.0367Years-0.0004514YearsSquared. Not lnsalary= 3.848+0.0369Years-0.0004514YearsSquared. 2) The second error is equation 8.12 on Page 400. The corresponding marginal effect should have a constant of 0.0367 not 0.0369. Hello, this is Sebastian Badali. I emailed two typos on Page 400 to you. The error is either in the two equations (8.11 and 8.12) or the output table (Table 8.3) on Page 401. Please note this when making your decision on the bonus points. This is Sebastian Badali, again. Econ 120C - 1 point On Page 405 the third command reads: ?genr lnusql=lnusq-uhat ; Then the next command reads: ?genr usqhat5=exp(lnusq1); In the first command you refer to it as lnusql. In the second it is referred as lnusq1. Date: Tue, 2 Jun 1998 19:52:25 -0700 Hi Professor Ramanathan this is Sebastian Badali. I found two more typos in your book, they are both on Page 443. 1) At the bottom of Page 443 the word "judgement" is misspelled, in the text it is spelled "judgment". 0 points for this. 2) At the top of Page 443 the first ESL command reads ?genr gfarmpop=1diff(farmpop) instead of ?genr gfarmpop=ldiff(farmpop) the 1 should be replaced by the letter l. 1 point --------------------------------------------------------------------------- To: 120C 1 point Date: Fri, 15 May 1998 13:03:06 -0700 This is Shahrum Badkoubei, and I think I have found an error in the book. The error is on Page 385, in the book it says a2=a3=...ap=0, but I think there should be an extra equal sign before ap. So it should look like a2=a3=...=ap=0. If possible could you please write back to sbadkoub@juno.com, thank you very much. Date: Tue, 19 May 1998 15:32:04 -0700 1 point Hi this is Shahrum Badkoubei, and I think I have found an error in the book. On Page 386, line 1 you have written i=2,3,...p but instead it should be i=2,3,...,p. You have left out the comma before the p. If possible could you please respond to me at sbadkoub@juno.com, thank you. --------------------------------------------------------------------------- Date: Sat, 9 May 1998 18:24:23 -0700 (PDT) 120C 1/2 point From: Kin-Wah Lee I am wondering if the word "and" altered, on Page 413 from the third to the last line a typo. It seems to me it may be "are altered". 120C student, Kin-Wah Lee --------------------------------------------------------------------------- Date: Tue, 19 May 1998 10:37:42 -0700 1 point From: tae kim Page 395, Example 8.7, line 16 (Equation 8.10) The term "INCOME" should have a subscript "t". --------------------------------------------------------------------------- From: "David Fu" 1 point Date: Tue, 19 May 1998 15:05:29 -0700 I found on Page 385 of the book, 11th line from the bottom of the Page: "alpha's This is the auxiliary regression ........" There should be a period after "alpha's." --------------------------------------------------------------------------- Date: Wed, 20 May 1998 00:23:38 -0700 (PDT) 1/2 point I think there's a typo on p. 400, where ln(SALARY) should be, it says "In"??... - Quynh Gin --------------------------------------------------------------------------- Jennifer Drimmer Page 171, 1 point --------------------------------------------------------------------------- Rebecca Perlmutter Pages 436 and 476 2 points Page 447 1 point --------------------------------------------------------------------------- John Hunt Page 317 1 point --------------------------------------------------------------------------- My name is Renee Zew and I am in the Econ 120C class. I think that I found a typo in the book. On Page 335, in the computer output, the first command is not in bold lettering. ?ols LWAGE const EDUC EXPER AGE ; 1 point This is not in bold lettering, as the commands usually are. --------------------------------------------------------------------------- Date: Tue, 2 Jun 1998 18:20:48 -0700 (PDT) Reached From: Moulik Shah Max 5 points I found a typo on Page 599. Engel should be spelled Engle. Thanks, Date: Wed, 3 Jun 1998 09:21:36 -0700 (PDT) On Page 456, in exxample 9.9 paragraph, Engel should be Engle. This is wrong twice in tthe box. On Page 523, 4th line from top, same mistake. Engel should be Engle. On Page 527, 14th line down under the box 10.8 Error.... Engel should be Engle as in Engle and Granger (1987)... On Page 529, 10th line from top, Engel should be Engle as in Engle and GRanger (1987). On Page 540, at the botton of the Page under source, Engel should be Engle. On Page 540, on the first line from top, Engel should be Engle. On Page 540, approximately 17th line from top, Engel should be Engle. On Page 545, the first line under Estimatiom..., Engel should be Engle. On Page 582, under Emprical Example. ...Engel should be Engle. On Page 583, the last sentance, Engel should be Engle. On Page 584, under source, at bottom , Engel should be Engle. --------------------------------------------------------------------------- Date: Sat, 6 Jun 1998 17:33:15 -0700 (PDT) From: Angela Fajardo i wrote you yesterday with an error in your book, but i found another one today. on page 190, model d is not labeled, as the other models are. --------------------------------------------------------------------------- Amy Huang, Page 343 beta to beta not 1 point ---------------------------------------------------------------------------