My first hypotheses I will be testing is: 'Pupils with a higher IQ level tend to have higher Key Stage 2 results.'

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Rachel Burrow

I am going to look at two variables for my data handling investigation; IQ level and Key Stage two results. I am going to investigate whether a student’s level of IQ affects their attainment grades in their Key stage two tests. For my investigation I will be using data from Solent high school regarding 11-14 year old pupils.

IQ is the ratio between a person’s mental age (mental attainment based on the average age of a child at that level) and their chronological age multiplied by 100, and this produces the average IQ as 100.

MA/CA x 100 = IQ, from this both MA and CA are continuous measures therefore the resulting IQ will be continuous, yet in normal usage IQ is always quoted as discrete data..

I am going to add together the results for Maths, English and Science for all the Key Stage 2 results to give a total Key Stage 2 result. This will enable me to plot one set of data results instead of 3.I will then be able to see if there is any correlation between the 2 variables. This is also discrete date as the values are all whole numbers.

My first hypotheses I will be testing is:

‘Pupils with a higher IQ level tend to have higher Key Stage 2 results.’

The second hypotheses I will be testing:

‘Male students have a higher IQ on average than females’

I think my first hypotheses is true because if a pupil has a higher level of intelligence it stands to reason that they will be able to achieve a better grade in their Key Stage two tests.

I think my second hypotheses is true because……………………

I will need to collect data about 11-14 year olds including their IQ levels and their Key stage two results. I will get this data from the Itchen Intranet about Solent high school. I will then record my data in a spreadsheet on excel.

The data will be useful because it will give me real data about pupils in a high school and I will be able to analyse it and make calculations to see whether it proves my hypotheses. I will need to collect sets of data for 60 pupils, and I will take this random sample from the population at Solent High School which is 1185. I will do this by using the computer to select 60 numbers at random.

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Before I start my coursework assignment I will check the data for any mistakes that have been made. If I can make a sensible correction to incorrect data I will do this but if not, or it is incomplete I will delete the entire record of data for that student.

I will make sure my data is reliable and not biased by making sure that each member of the population is arranged randomly. So that they are not arranged or grouped together in any form before the sample is taken as this could make the sample become biased. ...

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