714 / 721
Results 1
Research hypothesis:
Year mark is better when the intervention is
given
Mann Whitney procedure gives:
■ Sample median = 84.7
■ Population median = 72.9
■ Sample mean = 74.8
■ Population mean = 66.7
■ U = 7278.0
■ ns = 21
■ np = 568
■ p = 0.043
■ Effect size = 0.31 (small: 0.2, medium: 0.5, large: 0.8)
Research hypothesis is supported.