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Tennis Service Improvement Among 12 - 14 Year Olds

Table 1:

Statistics Serve 1 Serve 2
N = 12 Result Grade Result Grade
Average 3.91 3
Difference 0.91
Amplitude 6 4
Cv (%) 2.20 0.75
Homogeneity High
t - test 2.20
Statistical difference Statistically significant (p = 0.05)
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