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Statistical
Analysis
for Business Applications
Main Page
(updated December 4, 2000)
Computer Assignment 3 Scores.
Final Exam Rules, Study Material
The Final Exam exam will be on Tuesday, December 12, 5-8 p.m. (as announced on the syllabus), in your regular classroom (Room 160 MH). Click here for a detailed explanation of the rules and study material
Homework Set 6
Work on Homework Set 6. (You may also find this homework set in the yellow packet. However, this website gives additional detail not given in the yellow packet.)
Homework Set 6 is on Simple Linear Regression. This is the last homework set for this semester.
Exam 1, Exam 2, CA1, CA2 scores, ranks, percentiles, tentative letter grades
Second Exam Rules, Study Material
The second midterm exam will be on November 9, 2000, as announced on the syllabus. Click here for a detailed explanation of the rules and study material.
Homework Set 5
- Work on Homework Set 5, exercises 1-22, 24, 26-37. That is, work on all exercises, except 23 and 25. (Recall that, as announced on the WebBoard on October 18, this homework set has been updated to reflect your current textbook. Do not work on the version on the yellow packet but on the one indicated here.)
- I have added on November 2, 2000, the following exercises:
Textbook Exercises on determining the sample size:
- 10.30, page 388
- 10.36, page 388
- 10.38, page 388
- 10.43, page 389
- 10.44, page 389
Textbook Exercises on paired comparisons (t-test for related samples):
- 12.35, page 505
- 12.37, page 506
(NOTE: Exercises 5-22, 31-37 are from the textbook, Basic Business Statistics — Concepts and Applications by Berenson and Levine, Seventh Edition. Answers to these exercises are given at the end of the textbook. You may also work on any of the other textbook exercises if you need additional practice.)
Computer Assignment 3 due Tuesday, November 21.
Class Pictures are ready!
Excel WorkBook for z
and t
p-values, table values, confidence intervals
I have created an Excel workbook for the calculation
of p-values, table values, and confidence intervals:
http://www.cba.uh.edu/~peixoto/DISC6360/pvalues.xls
Please note that this workbook has seven worksheets:
0) Home
1) z-test on one mean
2) t-test on one mean
3) z-test on one proportion
4) z-test on any parameter
5) t-test on any parameter
6) F-test
A Home worksheet, hyperlinks, and comments have been
included to make the workbook easier to use.
This is a "live" workbook to be used
interactively.
You should know how to calculate p-values "by
hand", as explained in class, using the z- and
t-tables. (Although in the case of the t-table, your
precision is limited, as also explained in class.
Nevertheless, your hand calculations should be consistent
with what Excel obtains.)
RECOMMENDATIONS:
* Calculate p-values, critical values, table values, test
statistics ... "by hand" and use the Excel
workbook to confirm your hand calculations.
* In most worksheets, you may change side of test,
hypothesized values, sample size, sample mean, sample
mean, standard deviation. Experiment.
* Use this Excel workbook it to confirm your hand
calculations for all cases in Handout 7, Homework Set 5 (specially exercises
26-30), and past exams.
* In the case of Handout 7 and Homework
Set 5, the most useful worksheets are
1) z-test on one mean
2) t-test on one mean
3) z-test on one proportion
The other worksheets will be useful for regression
analysis (to be covered later in the course).
This workbook has been saved in Excel 97 format. I can
post it in some other form if you have trouble reading
this format. Please report any problems and errors to me.
Excel WorkBook for
The Light Bulb Experiment
(Note posted Oct. 11, 2000)
We are currently discussing "The Light Bulb Experiment" in class. This is explained in Handout 7 in the yellow packet, which is based on MINITAB.
I have
prepared an Excel equivalent of Handout 7. You can find
it in
http://www.cba.uh.edu/~peixoto/DISC6360/Hout7.xls
This is a "live" spreadsheet. To study it, you need more than just printing it; you need to experiment with it.
Study the formulas in sky blue cells. Pay particular attention to the formulas used to obtain table values.
Experiment changing some of the following parameters:
- confidence level;
- sigma;
- level of significance;
- hypothesized value.
Also, note that the workbook has two worksheets:
- "Main", and
- "Data".
Study both.
Exam1 (Fall 2000) Scantron Keys
The correct choices for the five versions of Exam 1
can be found at
http://www.cba.uh.edu/~peixoto/DISC3331/Ex1SCNTR.PDF
You may pick up your scantron form from Steven's office
(260A Melcher Hall), preferably during Saturday
tutorials.
You may not take your questionnaire form but you may
request to see it.
You may also request to see the solution keys.
Contact Steven Tannous at STannous@uh.edu if you
need more information.
Exam 1 rules,
study material
(Exam 1 is on Thursday, September 28)
Computer Assignments 1 and 2 due dates
- Computer Assignment 1 due Tuesday, September 19.
- Computer Assignment 2 due Tuesday, September 26.
Note: The syllabus mentions a packet of past exams. There is a change of plans. Instead of making you buy them, I'm making them available on the web. DO NOT GO TO THE UC TO BUY THESE PAST EXAMS. Click on past exams instead, to get them for free.
Number pages in the yellow packet.
Tutorial Sessions, Teaching Assistant: Steven Tannous
Work on Homework Set 1. (Homework exercises are for practice only. They will not be graded. Solution keys are included in the course packet.)
Also, read "Some Properties of The Sample Mean, Variance, and Related Statistics". This handout is a useful study material for summation notation and calculation of sample means, variances, and other statistics. It complements and expands the exercises of Homework Set 1.
Syllabus, Fall 2000
You may
find the syllabus for the course (in Adobe Acrobat .PDF
format) at
http://www.cba.uh.edu/~peixoto/DISC3331/Syllabus.PDF
You need the Adobe Acrobat Reader (a free program) in
order to read PDF files. If this reader program is not
already installed in your computer, you can download it
(for free) from
http://www.adobe.com/prodindex/acrobat/readstep.html
(Follow the instructions on this Adobe web site. It takes
only a few minutes to download and install.)
Adobe Acrobat Reader is available in every PC in the RICS
laboratory.
Objectives
and Tentative Course Outline
(in Adobe Acrobat .PDF
format).
Deadlines, other important dates,
Fall 2000
Private Tutor Offer
Free drop-in tutoring
Running Minitab
Download data sets
Adobe Acrobat Reader
(needed for PDF files)
Guidelines for assigning letter
grades
Class pictures, all
courses, all semesters
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