1. Females and Stages of Physical Activity in Schools
... size is required to increase the validity of the research and to reduce the effect non-return of questionnaires have on the study (Smith, 2010). The participants were selected using stratified random sampling, this uses sub-groups of the population based on a certain quality (Pitney and Parker, 2009). In this case, it was females in year 7 and year 12. The age group(s) of the samples chosen were appropriate ... provide more information, this was something that was not picked up on at the pilot study. Greetham (2009) notes that questionnaires can introduce bias into the results and they ...
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