September 2018
Intermediate to advanced
392 pages
10h 16m
English
Example
Imagine that someone has developed a training programme that aims to increase the IQ of young children. With only 4 children enrolled in the programme, an increase of 10 IQ points would be a statistically significant outcome. However, with 25 children enrolled, an increase of 4 IQ points would also be significant, and with 10,000 children even an increase of 0.2 IQ points would be significant (see Table 5.1). However, would you send your child to this training programme? Probably not, as an increase of 0.2 IQ points almost certainly has no practical relevance. This means that the fact that a study’s outcome is statistically significant ...
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