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Statistics GCSE Coursework. Height and weight of pupils. The sampling method I am going to use is stratified sampling. This method is appropriate as the data is split into strata already (year group/gender)
- Essay length: 6171 words
- Submitted: 23/01/2012
The first 200 words of this essay...
Pilot Study
Year Group
Boys
Strata
Girls
Strata
Total
Year 7
151
=13
131
=11
282
Year 8
145
=12
125
=11
270
Year 9
118
=10
143
=12
261
Year 10
106
=9
94
=8
200
Year 11
84
=7
86
=7
170
Total
1183
A pilot study is used test the viability of research. It is a study done prior to the main test enabling researchers to improve the design of the main study making the outcome of the test more reliable. To select the data I wanted for my pilot study, I had to take a sample of the data, the reason for doing this is to cut down time, as I would have to sift through all of the data to delete anomalies and if you take a sample it should be representative of the population, as the set of data is therefore made smaller the result I obtain should be more reliable/accurate. However there are
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