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EXST 7003 Lab 08
Fall 2011
EXST 7003, Lab 08:
Decision Processing and OneWay ANOVA in SAS
Week of:
October 31
st
to November 4
th
DUE:
November 7
th
(section 1) or November 11
th
(section 2 or 3)
The Program
In this lab we will investigate the analysis of paired data. Paired data can be analyzed by
computing withinpair differences and the analyzing the sample of differences. Conceptually, the
problem is transformed from one involving two samples, one from each of two populations, to an
equivalent problem involving one sample from the population of all paired differences. Thus the
procedures for analyzing data from a single population can be used.
We will also analyze this paired data as though the samples were independent, not taking the
paired nature of the data into account in our analysis. This will illustrate how failing to account
for the paired nature of the data in an analysis can result in a loss of power and therefore lead to
different conclusions.
dm
'log;clear;output;clear'
;
OPTIONS
nodate
nocenter
pageno=
1
ls
=
78
ps
=
55
;
Title1
'EXST 7003 Lab 08'
;
Title2
'Your name'
;
The data represent pollution indices of air samples taken from two areas of a city. The two areas
are labeled A and B
data
airpollution;
input
AREA $
INDEX ;
datalines
;
A
2.92
A
1.88
A
5.35
A
3.81
A
4.69
A
4.86
A
5.81
A
5.55
B
1.84
B
0.95
B
4.26
B
3.18
B
3.44
B
3.69
B
4.95
B
4.47
RUN
;
1
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View Full Document EXST 7003 Lab 08
Fall 2011
Let μA and μB denote the mean pollution index levels for areas A and B, respectively. We are
interested in determining whether the mean pollution index levels for the two areas of the city are
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This note was uploaded on 12/28/2011 for the course EXST 7003 taught by Professor Moser,e during the Fall '08 term at LSU.
 Fall '08
 Moser,E

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