Survey into IQ, Hair colour, Gender and relationships between them

An investigation into factors that may be connected with IQ scores.

Being one of only three blonde females in a top set Maths class that is dominated by males aspersions tend to be cast our way as to our lack of intelligence!! Having been given a set of secondary data from the fictious High School Mayfield I want to look into this aspect of life and see whether their aspersions have any basis in real life.

I am going to assume that Mayfield High School is a fairly typical High School in the United Kingdom and so I believe that any results that I find will be typical of everyone in the UK. To do this I will be looking at the IQ results to see if they appear 'normally' distributed, in order to back this assumption.

I have chosen to take a systematic sample of the data provided as I feel that it is the quickest way to obtain an unbiased sample.

Raven's Progressive Matrices Example

English: Blonde girl Русский: Блонди�...

I.Q. Tester

The fairness of my sample depends upon the way the data is first sorted, and my data has been sorted in name order I think that my sample is unbiased as surname should have no affect upon hair colour, IQ or gender. I have decided to take every 7th item of data that will give me 169 sets of data that I feel is large enough to a fair representative of the school but small enough to be easily manageable.

So, the questions that I will try to find answers to will be:

1. How does gender affect IQ scores?

2. How does a person's hair colour affect their IQ scores?

3. Is their any difference between male blondes, female blonde, other males and females?

My hypothesises to these questions are

1. That neither...