The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals who are in marketing. Three groups are considered: management, research and advertising (higher scores indicate higher ethical values).
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Anova: Single Factor | ||||||
SUMMARY | ||||||
Groups | Count | Sum | Average | Variance | ||
Marketing Managers | 6 | 54 | 9 | 0.8 | ||
Marketing Research | 6 | 27 | 4.5 | 0.3 | ||
Advertising | 6 | 42 | 7 | 0.4 | ||
ANOVA | ||||||
Source of Variation | SS | df | MS | F | P-value | F crit |
Between Groups | 61 | 2 | 30.5 | 61 | 6.24E-08 | 3.68232 |
Within Groups | 7.5 | 15 | 0.5 | |||
Total | 68.5 | 17 |
a. Sum of Squares, Treatment=61.0, Sum of Squares, Error=7.5, Mean Squares, Treatment=30.5, Mean Squares, Error=0.5.
b. The value of the test statistic=61.00.
P-value=0.0000<0.01
The p-value is less than 0.01.
Conclude that there are differences among the mean perception
scores for the three groups.
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