•3/23/2011
•1
Lecture 16: March 23, 2011
• Today:
– Multiple Comparisons: middle page 450  middle page 452
• Tukey’s Test: We’ll go through the five step in hypothesis testing.
•
Well do this for all three (multiple!) comparisons.
– TwoFactor ANOVA: pages 456462
• A second “factor” is introduced to oneway (or onefactor) ANOVA
• Connect Homework 10, tentative schedule:
– I’m working on it.
– It will be ready Thursday.
– Two problems: ANOVA and then Tukey
– It will be due Monday at 6:00 p.m.
• Update to WorkedOutProblems menu on my web site:
– Problem 10.33, page 424 – Comparing Two Variances
– Problem 11.1, page 464 – OneWay (OneFactor) ANOVA
•
Go to Handouts menu on my web site and download:
– Ftable(.05)
– Tukey table
Discussion Session 9: Friday, March 25
•
First item
of business: Go to the
Handouts menu
on my web site.
Download the Ftable(.05) and the Tukey table.
•
Second item
of business:
Go to the
DiscussionDataSets menu
on my
web site. Download the data set titled “Discussion 8 Data, ANOVA Problem
11.1, page 449.”
This is an
Excel
spreadsheet that contains the data for
Problem 11.1.
I asked you to do this same thing
for your last
discussion on
March 11.
•
Third item
of business: Convert the
Excel
spreadsheet to a
Minitab
spreadsheet. Use
Minitab
to run the ANOVA. Do you need directions
regarding how to run
Minitab
? Go to three
Minitab
slides near the end of
Lecture 14 (March 9) or the same three slides near the beginning of Lecture
15 (March 21) to get the necessary information.
•
Fourth item
of business: Go to the
WorkedOutProblems menu
on my
web site.
Click on Problem 11.1. The hypothesistest steps are laid out for
you, and the problem is solved. (These are the steps that we developed in
Lecture 14 on March 9). Make the insertions required for Steps (2), (3), and
(4) to confirm the final numbers obtained for MSA, MSE, and F.
•
Fifth item
of business: Do Problem 11.5 on page 452. This is aTukey
hypothesistest procedure for
three paired differences.
You will calculate
the Tukey test statistic three times by hand: once each for
pair (A,B), (A,C),
and
(B,C). We develop all of the steps and provide a complete example
during Lecture 15 today March 23. “By hand” is not as involved as you may
think.
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 Spring '08
 KOUZEHKANANI
 Statistics, Critical Point, Null hypothesis, Statistical hypothesis testing

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