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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 One-Way ANOVA
One-Way A random sample of the students in each
row was taken
The score for those students on the
second exam was recorded
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 One-Way ANOVA
The summary statistics for the grades of each row
are shown in the table below
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 One-Way ANOVA
One-Way Variation Variation is the sum of the squares of the
deviations between a value and the mean of
Sum of Squares is abbreviated by SS and
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 One-Way ANOVA
One-Way 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