below or download as a MS Word document.
population consists of over 21000 South Australian, Western Australain and
Northern Territory (mainly South Australian) actual school students from Years
8 - Adult re-entry. These students completed an online survey (during March
2003) consisting of 34 student designed questions.
While this group could be considered as a sample of all South Australian students
(Years 8 - Adult re-entry) studying in South Australian schools, for learning
purposes we ask you to consider them as a population.
database of responses from the population is intriguing, it holds many
interesting stories that you would love to know and maybe write about
in your student newspaper, talk about on your student radio or at school assemblies.
is often the case in real life, you are not going to be able to
view all the data from the population and uncover the stories with 100% certainity,
but you will be able to take a sample of the responses and analyse it, ultimately
estimating parameters from which the stories can flow.
'sampler' will allow you to select a SRS
of the responses of upto 255 individuals from our population.
part of a statisticians life is to design and implement appropriate sampling
techniques to gather data from a sample of a popualtion of interest
in order to analyse it and estimate parameters associated with
the population. One example of this is the TV
is now up to you to decide what stories you want to unearth.
through the questions and decide what facets
of the information gathered is of interest to you and then do the following:
state the question of interest to you
- Decide upon
the characteristics of the sample you require data from.
- Go to the
sampler and selected an approriate sample for
your sample data in an appropriate manner
- From the
results of your analysis, make appropriate conjectures
- If you have
the skills to do so, attempt to prove (statistically) your conjecture(s)
this rare situation, it is possible to find out whether or not your analysis
and subsequesnt attempts at statisitcal proof reflect what is the actual case
- as The Baker Centre can tap into the population and look! But we
won't be doing this until later in 2003, so for now you will just have to
dream up a question of interest, sample, analyse, conject and statistically
hope you enjoy this rare opportunity to work with real data that you
(SA, WA and NT students) contributed to. So that we can reveal the truth
about the sorts of things you chose to investigate, please
submit the details of your investigation to us and we will keep a record
of it and reveal the truth late in 2003. We also invite you to submit
your work to be considered for publishing on this site.
examples of possible questions are:
- What is
the proportion of girls in the population?
- What is
the proportion of public school students in the population?
- What was
the mean amount of money earned 'last week' by the students in the population?
- Are girls
more likely than boys to think body peircing is the coolest fashion accessory?
- Are Year
8 girls from the inner northern suburbs more likely than Year 8 girls
from the inner southern suburbs to rate Mathematics as their most favourite
possibilities are large in number.
remember though that any of your conclusions are about the responses from
the 21000 plus students who took part in the survey. Your findings may or
may not reflect the actual case in our society, this you can not be sure -
why? You think about it.
to the sampler