252key 4/09/07 (For doc. version use http://courses.wcupa.edu/rbove/eco252/252key.doc.)
Welcome to the Eco252
Web Page
This is a web page in progress. The page contains links to the course syllabus,
course outline with homework assignments, computer problems, and annotated
outline. It will contain old exams and problem solutions after they are discussed in
class. For future use bookmark this page.
My hard drive is regularly checked for viruses. If you get a virus report, please give
me the document number and I will reboot it.
My standing offer: If you submit a good exam problem to me, you might just find it on the
exam. The better thought out it is, the more likely it is to go on the exam with minimal
changes. However, since there are 2-4 Statistics exams, the numbers are likely to be changed.
A number of students have submitted questions in the past and, I believe, gotten better grades
because of it.
My new standing offer: Work to improve the course, if it is used, will be rewarded by
adding extra credit points to grades on graded homework. This includes, but is not limited to:
1) The first person to notice an error on any posted document except, maybe, exams; 2) help
to improve course graphics and 3) valuable ideas for new documents or problems.
Notices ---- Office hours for current weeks are several pages below.
You should always be sure that you have a copy of the current outline pages to bring to class.
You should know how to access Blackboard.
http://courses.wcupa.edu/rbove/entering_blackboard_for_the_first_time.doc. You can enter this
website through Blackboard.
In addition to the prerequisites you are expected to be able to express yourself in
writing. All e-mails to the instructor should be in grammatically correct but not
terribly formal English with the spelling checked! Note the following rules!
1. Verbs HAS to agree with their subjects.
2. Prepositions are not words to end sentences with.
3. And don't start a sentence with a conjunction.
4. It is wrong to ever split an infinitive.
5. Avoid clichés like the plague. (They're old hat.)
6. Be more or less specific.
7. Parenthetical remarks (however relevant) are (usually) unnecessary.
8. Also too, never, ever use repetitive redundancies.
9. No sentence fragments.
10. Don't use no double negatives.
11. Proofread carefully to see if you any words out or mispeld something.
12. Eschew obfuscation.
13. i get very angry if you Don’t capitalize correctly.
14. Pronouns should be put in the correct case, and the passive voice should be avoided
by you and I.
15. I were very happy if you would have learned the difference between the subjunctive
and the conditional.
16. Be fermiliar with the spelling and pronunciation of words like higharchy.
17. Its very annoying if you don’t know when ‘its’ needs it’s apostrophe.
18. Writing carefully, dangling participles must be avoided.
Do you know the difference between ‘you and I’ and ‘you and me,’
‘fortuitous’ and ‘fortunate,’ ‘enormousness’ and ‘enormity,’ ‘lay’ and ‘lie,’
‘reticent’ and ‘reluctant,’ ‘mischievous’ and ‘mischeevious?’ Most students
and too many faculty and newspaper editors don’t. ‘mischeevious’ is not a
real word, but I have been hearing ‘mischievous’ pronounced that way too
often.
From the Tutoring Center:
How to sign up for a tutor
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Come to 105 Lawrence Center and fill out a request form. You must be present to be assigned.
You may sign up for up to three different courses. Make sure you give us the course name,
course number, and your section number.
If our tutors are booked, you will be placed on a waiting list. We will contact you as soon as a
space becomes available.
Remember, tutors are assigned on a first come, first serve basis. If you anticipate a problem in a
given subject, sign up early -- crisis tutoring does not work.
The LARC cannot schedule more than one tutoring session per class, per week. Exceptions are
reviewed on a case by case basis.
If you have a learning disability or require individualized tutoring, let us know right away. We will
try to accommodate your needs as much as possible.
For more tutoring information see my correspondence with LARC.
April Notices
April 9 – The exam has been put to bed. Especially in the multiple choice questions, you need to
know the meaning of things like the following: Lilliefors test; Pooled-variance t test; Pairedsample t test; Wilcoxon rank sum test; Wilcoxon signed ranks test; the test for comparison of
means for samples with unequal variances; the Chi-square tests.
April 6 - The take-home part of the third exam is now available and due with the exam on
Monday April 16.
April 5 – Solutions to the first and second exam are available in OLD EXAMS.
April 4 – All problem solutions to the end of the term are posted in PROBLEM SOLUTIONS.
Official exam schedule is at http://www.wcupa.edu/registrar/exam.html.
April 3 – Notice that I have no office hours on Thursday, April 5. If you want to see me after
5pm that day, send an e-mail. Apologies to the person to whom I apologized for missing my
office hours on Tuesday, March 27 – I didn’t have office hours on March 27. I do owe an
apology for anyone who tried to see me on the 29th, when I had to take a sick half day.
References copied from below.
OUTLINE and Lecture Summary
OUTLINE for use by instructor in class.
Syllabus
Terms not explained elsewhere.
PROBLEM SOLUTIONS
PROGRAMS
OLD EXAMS
SYLLABUS SUPPLEMENT EXCERPTS also see SYLLABUS SUPPLEMENT CONTENTS. This is most of the
contents of Supplementary Materials & Tables for ECO 251 & 252, which is available from Dynamic Student
Services, 20 Linden St. I strongly recommend that you buy these tables rather than copying these from the website,
since the bound form is more convenient.
ACADEMIC DISHONESTY STATEMENT – See syllabus for current version.
Homework Assignments
Grading Rubric
Minitab information appears under Minitab Options at the end of this document.
Macros from Minitab
MARCH NOTICES
March 29 – - Graded Assignment 4 is now available and is due in your last class next week. The
Solutions to all problems through all of section F are now available in PROBLEM SOLUTIONS.
APSCUF scholarship information is available at
http://courses.wcupa.edu/rbove/APSCUF%20poster%202007.doc.
March 28 – Office hours and Final Exam times are posted below.
March 23 - The Solutions to all problems through the first part of section F are now available in
PROBLEM SOLUTIONS.
March 21 – 1) Here is the Solution to Graded Assignment 3. 2) There is an error in Computer
Assignment 2. The first line should read as follows: ‘Use File and the restart Minitab button. C1 should
be labeled mpg, C2 is car and C3 is driver. Label C4 as fits1.’ You can find the corrected version at
252cprb. 3) I have no official office hours on Thursday, but ECO 252 students can probably find
me after 5pm in my office until I finish the answer sheet for the exam.
March 20 – Here is the last question on Friday’s exam. If you can answer similar questions on
your first computer problem, you should be able to do these questions well.
10. Computer question.
a. Turn in your first computer output. Only do b, c and d if you did. (3)
b. A researcher believes that bank CEOs are paid more than utility CEOs. A random sample of eight
salaries (in thousands) is collected for each industry. What were the
null and alternative hypotheses tested? At
the 95% confidence level could the researcher state that bank CEOs are paid more than utility CEOs? Why? How
would the results be affected if we insist on a 99% confidence level? (2)
c. What is the difference between the two hypothesis tests that were done with the salary data? (1)
d. (Lee) A manufacturer is afraid that the company is producing slow egg timers. A sample of 12 timers is
chosen and the time in seconds that was needed for the timers to run
out was recorded. What hypotheses were
tested? Can the manufacturer conclude that the timers are slow if a 95% confidence level is used? Why? How
would the results be
affected if we insist on a 99% confidence level? (2)
March 19 – Several lines on the take-home have been rewritten for clarification.
a. Test to see if the Reps received significantly higher ratings when wearing suits assuming that the samples
come from the Normal distribution. (3)
b. Test to see if the Reps received significantly higher ratings when wearing suits without assuming a
Normal distribution. (3)
c. So, given the source of the data, which of the two is the correct method to use? Why? (1) [24]
March 8 – So why didn’t someone say something? It should be pretty obvious that when I said
“Do problems 7 and 8 using the following data,” that the data I gave was for problems 6 and 7,
which are the ones that you should do.
March 7 – The take-home part of the exam is now available and due with the exam on Friday
March 23. The Solutions to all problems through sections E are now available in PROBLEM
SOLUTIONS. The solution to the first exam is available in OLD EXAMS.
March 2 - Graded Assignment 3 is now available and is due in your last class next week. We
will meet in Room 17 this Monday.
FEBRUARY NOTICES
Feb 20 – I have finished putting together the First Exam. Its structure is very similar to last
year’s exam. The first page is Normal distribution problems. As usual you will have to find a
critical value of z, which you can use to create a confidence interval on a later question. Section
II is longer than last year’s. You have to compute a sample variance and use it in hypothesis
tests. Section III is shorter than last years and has quite a few problems on proportions. Don’t
forget to check office hours on the site before coming over.
Feb 19 - Solution to Graded Assignment 2 is available.
Feb 19 – Fatal mistake in take-home. The sum of x squared on the first page of the take-home
should read 442387.8608. The two was left out! It has been corrected.
Feb 16 – It would be a good idea to make a copy of your graded assignment 2 since it is unlikely
to be graded by the time the exam is given. You can hand the assignment in until 7pm.. The takehome part of the exam is now available.
Feb 15 - The Solutions to all problems in sections B and C are now available in PROBLEM
SOLUTIONS.
Feb 13 – Solution to Graded Assignment 1 is available.
Feb 9 - Graded Assignment 2 is now available and is due in your last class next week. Watch this
space for corrections and report any difficulties to me.
Feb 8 – I was an hour late for my office hours today. I will be available until at least 8pm.
Graded Assignment 1 has been corrected.
Feb 5 – If you are unsure of your direction you may want to hear about a local employer.
What Monica Mercurio from Moody's Economy.com
When: Tuesday Feb 6th 4:30-5:30
Where: Anderson 213
Monica Mercurio will be speaking about some job openings at Economy.com.
has told me that they hire all majors, so feel free to encourage any
interested students to attend.
She
Feb 1 – The Solutions to the confidence interval problems assigned are now available in
PROBLEM SOLUTIONS. Graded Assignment 1 is now available and is due in your last class
next week. Watch this space for corrections and report any difficulties to me.
JANUARY NOTICES
Jan 29 – The documents to be handed out on Friday are listed in 252onesCover1.
Jan 24 – The document 252onea now has the properties of estimators added to A2.
Jan 22 - This page can now be entered through blackboard.
Jan 19 – A corrected version of 251distrex3 has been posted. The two corrections on the 4th and
6th pages of the document are double underlined. The last page now prints correctly.
Jan 18 – The recommended calculator was Hewlett Packard HP10B.
Jan 17 – The documents handed out today are enumerated in 252oneaCover and 252syllCover.
Office Hours: (Call 610-436-2134 if you're not sure! But you are always
better off e-mailing rbove@wcupa.edu) . I am often in during late afternoons and
evenings outside of these hours.)
SCHEDULE
Monday Mar 26
Office Hours Noon – 2pm
Tuesday Mar 27
No Office hours
Wednesday Mar 28
Office Hours Noon – 2pm
Thursday Mar 29
Office Hours 2 – 3pm
Friday Mar 30
Office Hours Noon – 2pm
Monday April 2
Office Hours Noon – 2pm
Tuesday April 3
Office hours 3:30 – 5pm
Wednesday April 4
Office Hours Noon – 2pm
Thursday April 5
No Office Hours
Friday April 6
Office Hours Noon – 2pm
Monday April 9
Office Hours Noon – 2pm
Tuesday April 10
Office hours 3:30 – 5pm
Wednesday April 11
Office Hours 1:30 – 2:45pm
Thursday April 12
Office Hours 3:30 – 5pm
Friday April 13
Office Hours Noon – 2pm
Third Exam
Monday April 16
Office Hours Noon – 2pm
Tuesday April 17
Office Hours 5 – 6pm
Wednesday April 18
Office Hours Noon – 2pm
Thursday April 19
Office Hours 3:30 – 5pm
Friday April 20
Office Hours Noon – 2pm
Monday April 23
Office Hours Noon – 2pm
Tuesday April 24
Office Hours 3 – 5pm
Wednesday April 25
Office Hours Noon – 2pm
Thursday April 26
Office Hours 4:30 – 5:30pm
Friday April 27
Office Hours Noon – 2pm
Monday April 30
Office Hours Noon – 2pm
Tuesday May 1
Office Hours 3:30 – 5pm
Wednesday May 2
Office Hours Noon – 2pm
Thursday May 3
Office Hours 4:30 – 6pm
Friday May 4
Office Hours 4:30 – 6pm
Monday May 7
10:30 – 12:30
EXAM ECO 251 MWF 11
Office Hours Noon – 2pm
3:30 – 5PM
EXAM ECO 252 MWF 3
Tuesday May 8
Office Hours 3:30 – 5pm
Wednesday May 9
Office Hours 3:30 – 5pm
Thursday May 10
10:30 – 12:30
EXAM ECO 251 MWF 10
Office Hours by Appointment
Friday May 11
Continued on next page
Office Hours by Appointment
SYLLABUS
252syll
For homework assignments, see below.
COURSE OUTLINE WITH HOMEWORK ASSIGNMENTS
252hwk contains a course outline and homework assignments.
Partial solution to 2000 second graded assignment.
252cprb is the first 3 computer problems. Bring a copy of this document to the computer room or get one off the
website as soon as you arrive the computer sessions. 4th Computer problem will appear later.
Graded Assignments and Solutions will be accessible below.
Graded Assignment 1
Solution to Graded Assignment 1
Graded Assignment 2
Solution to Graded Assignment 2
Graded Assignment 3
Solution to Graded Assignment 3
Graded Assignment 4
Solution to Graded Assignment 4
OUTLINE – Lecture notes.
Lecture notes for use in class - OUTLINE
Terms not explained elsewhere.
PROBLEM SOLUTIONS
PROGRAMS
These will be made available by request.
252prog
252chisq
Does chi-square homework
252sols
Does simple regression homework
Grading Rubric gives you an idea of what I expect.
OLD EXAMS
SYLLABUS SUPPLEMENT EXCERPTS also see SYLLABUS SUPPLEMENT CONTENTS
CURRICULUM VITAE
Minitab Options
The simplest way to get a copy of Minitab for your own computer is to go to MINITAB Release 14 Demo
(Download a free, fully functional, 30-day demo version of MINITAB Release 14. You can
also download an electronic version of the introductory guide to MINITAB 14, Meet
MINITAB.) To rent Minitab go to http://www.minitab.com/education/semesterrental/default.aspx . If you are
interested in purchase and rental options for faculty and students, check out
http://www.minitab.com/products/pricing/ACPRIORD.aspx.
The following three articles on the Minitab site seemed valuable.
Analysis of Variance Using Minitab
Individual Distribution Identification
The Minitab Data Window
Behrenson Text CD-ROMs - 8th and 9th edition
http://courses.wcupa.edu/rbove/Berenson/CD-ROM%20Topics
http://courses.wcupa.edu/rbove/Berenson/Data%20Files-8th/
http://courses.wcupa.edu/rbove/Berenson/Data_Files-9th/
Chapter Sections on Berenson Student CD-ROM – 10th edition
12.5 Chi-Square Goodness-of-Fit Tests
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section12_5.pdf
5.5 Using the Poisson Distribution to Approximate the Binomial Distribution
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section5_6.pdf
6.1 Using the Standardized Normal Table
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section6_1.pdf
6.5 The Normal Approximation to the Binomial and Poisson Distributions
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section6_5.pdf
7.3 Sampling from Finite Populations
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section7_3.pdf
8.7 Estimation and Sample size for Finite Populations
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section8_7.pdf
9.8 The Power of a Test
http://courses.wcupa.edu/rbove/Berenson/10th%20ed%20CD-ROM%20topics/section9_8.pdf
Continued on next page.
ADDITIONAL RESOURCES: Dr. Daniel Mohan has kindly provided a list of websites related to statistics. In
particular a copy of Minitab can be rented from the Minitab website. Note: A new window will be popped up to
display the linked pages. You will want to close this window when you are done looking at the selected site.
SPSS Home Page
Minitab Home Page
Texas Instruments Calculators
SAS Home Page
Frontline Systems
LINDO Systems
http://www.spss.com/
http://www.minitab.com/
http://www.ti.com/calc/
http://sas.com/
http://frontsys.com/
http://www.lindo.com/
Stata Corporation
http://www.stata.com/
Continued on next page.
URL list for this document.
Because some people have had trouble using the links in this document, they are listed here.
252hwkadd
http://courses.wcupa.edu/rbove/eco252/252hwkadd.doc
ttable1
http://courses.wcupa.edu/rbove/eco252/ttable1.doc
252syll
http://courses.wcupa.edu/rbove/eco252/252syll.doc
252hwk
http://courses.wcupa.edu/rbove/eco252/252hwk.doc
Partial solution
http://courses.wcupa.edu/rbove/eco252/252solngr2-01.doc
252cprb
http://courses.wcupa.edu/rbove/eco252/252cprb.doc
OUTLINE
http://courses.wcupa.edu/rbove/eco252/252outline.htm
Go here for outline links.
PROBLEM SOLUTIONS
http://courses.wcupa.edu/rbove/eco252/252solnkey.htm
Go here for problem links.
OLD EXAMS
http://courses.wcupa.edu/rbove/eco252/252examkey.htm
Go here for exam links.
SYLLABUS SUPPLEMENT EXCERPTS
http://courses.wcupa.edu/rbove/eco252/252suppkey.htm
Go here for syllabus supplement links.
CURRICULUM VITAE
http://courses.wcupa.edu/rbove/bovecv.doc
Miscellaneous Data Links
Doing a Regression.
252Datalinks
http://www.nam.org/s_nam/sec.asp?CID=5&DID=3 Manufacturing share in state economies
(http://www.nam.org/Docs/IEA/26767_20002001ManufacturingShareandChangeinStateEconomies.pdf?DocTypeID=9&TrackID=&Param=@CategoryID=1156
@TPT=2002-2001+Manufacturing+Share+and+Change+in+State+Economics)
http://www.nemw.org/data.htm Per capita income by state.
http://www.nemw.org/data.htm State personal income per capita.
http://www.bea.doc.gov/bea/regional/data.htm Personal income per capita by state.
http://www.census.gov/statab/www/ Many state statistics, including persons with bachelor’s degrees.
http://www.epinet.org/content.cfm/datazone_index Income inequality, median income, unemployment rates.
http://www.census.gov/statab/www/minihs.html Mini Historical Statistics
I have found the sites below recently.
http://www.heritage.org/research/features/index/downloads/economicFreedomandP
erCapita.gif
http://www.heritage.org/research/features/index/downloads/PastScores.xls
http://www.heritage.org/research/features/index/downloads.cfm
http://www.census.gov/econ/census02/
http://www.bea.doc.gov/bea/regional/reis/drill.cfm
http://www.bls.gov/
http://www.census.gov/prod/cen2000/
http://www.census.gov/
http://www.ssti.org/Digest/Tables/040405t.htm
http://www.cia.gov/cia/publications/factbook/rankorder/2004rank.html
http://www.carleton.ca/cifp/
http://web.worldbank.org/WBSITE/EXTERNAL/DATASTATISTICS/0,,contentMDK:2053528
5~menuPK:1192694~pagePK:64133150~piPK:64133175~theSitePK:239419,00.html
http://www.econata.net/
http://www.deconomagic.com/
http://www.epsusa.org/network/data.htm
http://www.fedstats.gov/
http://www.findarticles.com/p/articles/mi_m3SUR/is_5_82
http://www.economy.com/freelunch/
http://www.finfacts.com/biz10/globalworldincomepercapita.htm
http://healthlinks.washington.edu/nwcphp/nph/f2003/region_glance_f2003.pdf
http://www1.jsc.nasa.gov/bu2/economic.html
http://www.nemw.org/data.htm
http://www.infoplease.com/ipa/A0104652.html
http://www.silo.lib.ia.us/specializedservices/datacenter/datatables/UnitedStates/urusstpop19002000.pdf
http://www.census.gov/statab/www/
http://www.lib.umich.edu/govdocs/frames/steconfr.html
2005data1
2005series.
2005InvestSeries1.
2005SalesSeries1.
2005SalesSeries1
2005deflSeries1.
2005intSeries1.