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Tennis Service Improvement Among 12 - 14 Year Olds

Table 4:

Statistics Serve 2 Serve 2
Initial testing Final testing
Average 3.0 4.33
Difference 1.33
Amplitude 4.0 6.0
Cv (%) 0.75 0.75
Homogeneity High High
t - test 2.20
Statistical difference Statistically significant (p = 0.05)
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