4.3 STATISTICAL
TECHNIQUES
The
statistical test applies in this research work is known as the analysis of
variance, to calculate where the differences between zones lie. This ratio
called F- ratio employs the variance (α2) of group means as a measure of
observed differences among groups/zones.
Analysis of
variance (ANOVA) is, therefore, a more versatile technique than the t-test.
T-test is used only to test differences between two means. ANOVA can test the
difference between two or more means.Consider
the average traffic flow from the three (3) studied zones. The data below
represent the total average number of traffic flow from the zones. (From Week
1- Week 4, the total average number of traffic flow in the towns are Added
together, per daily; Mon-Sun, in one Month in each Zone).
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