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Unformatted text preview: than another, only whether they’re all equal or
at least one is different.
at H : µ =µ =µ
0 F M B 7 OneWay ANOVA
OneWay A random sample of the students in each
random
row was taken
row
The score for those students on the
The
second exam was recorded
second Front:
Middle:
Back: 82, 83, 97, 93, 55, 67, 53
83, 78, 68, 61, 77, 54, 69, 51, 63
38, 59, 55, 66, 45, 52, 52, 61 8 OneWay ANOVA
OneWay
The summary statistics for the grades of each row
The
are shown in the table below
are
Row Front Middle Back 7 9 8 Mean 75.71 67.11 53.50 St. Dev 17.63 10.95 8.96 310.90 119.86 80.29 Sample size Variance 9 OneWay ANOVA
OneWay Variation Variation is the sum of the squares of the
Variation
deviations between a value and the mean of
the value
the
Sum of Squares is abbreviated by SS and
Sum
often followed by a variable in parentheses
such as SS(B) or SS(W) so we know which
sum of squares we’re talking about
sum 10 OneWay ANOVA
OneWay Are all of the values identical? No, so there is some variation in the data
This is called the...
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This note was uploaded on 02/25/2013 for the course STATS 104 taught by Professor Mrs during the Spring '13 term at Lahore University of Management Sciences.
 Spring '13
 mrs
 Variance

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