Accuracy of Results
To ensure that I have a sufficient range of results I took 15 random people from each Gender. From the charts it looks like I have chosen a wide range of different results. The level of accuracy in this investigation met the level that was required of me.
Analysis
From my Bar Graph that show the comparison between the Boys and Girls IQ Levels I can see that overall the Girls do have higher IQ’s. Another point that proves this fact is that in the middle of this diagram the Boys have higher amounts of people with Lower IQ’s.
Looking at my Total IQ results plotted in a Bar Graph, and my Average Results for both the Boys and Girls in my Surface Area Graph it is evident that the Girls IQ levels are much higher.
The rise is 14more higher in IQ Levels for the Girls than the Boys. This works out for each student as a rise in [14/15] = 0.933 IQ Levels. The increase in my Surface Area diagram also shows this.
Therefore as a Conclusion in my Data Analysis I can say that my Hypothesis of:
Girls in Key Stage 4 at the Mayfield High School have a higher IQ Level than the Boys from the same years and school.
Is correct
This can be proved in all of graphs so therefore I think that these are a reliable way of saying that in the Mayfield High School in key Stage 4 the Girls have a much higher IQ in general than the Boys.
What do these results mean?
These results support my prediction entirely. In the planning section, I wrote ‘I predict that there won’t be much difference between boys and girls. If any, Girls will have the higher IQ compared to boys’. My results support my prediction that as the Average level of girl IQ is greater than the Boys are.
My Bar graphs show that there is a considerable difference in IQ. In total IQ amount the girls beat the boys by over 100. This proves quite clearly that Girls have a higher IQ than Boys. Comparing each individual person doesn’t show that much difference. Therefore, only when totals are added together, large contrasts occur.
The cumulative Frequency graph shows how many boys range between <91&<111, whereas girls tend to have a wider range of IQ results. In my chosen data there were no Boys with an IQ >111 also there are less girls with a lower IQ. This proves that girls tend to have less lower IQ and higher IQ test results than the Boys do.
Evaluation
From doing these hypothesises I have been able to gather some information about Mayfield High School. The hypothesis that I carried out during this coursework were:
1. Girls in Key Stage 4 at the Mayfield High School have a higher IQ Level than the Boys from the same years and school.
Throughout carrying out these hypothesises I have come across a few anomalies – These I have identified in each section, and explained by reasons behind them. Mainly the reasons were that the data was totally im - practable and must have been mistakes in the entering of the data.
If I were to repeat each of these hypothesises again I think that I would do a few things differently. These would be:
- Do more different types of experiment,
- Chose more random samples,
As you can see from my line of best fit graph females have a higher IQ than Males. The Female line being higher than the male line shows this
Anomalies
The time I had been allocated made it very difficult to achieve 100% accuracy for my experiments. This meant that there were, inevitably, always going to be some anomalies, also because the result were gathered from a school, there will be typing mistakes and deliberate mistakes by joking pupils e.g. IQ=290. Because of these mistakes I just had to accept them as real results due to this, I have tried to avoid them. Therefore, as you can see from the graph, there are no anomalous readings taken from the charts.
Improvements
If I were to repeat the experiment, I could make several improvements to improve the level of such factors as accuracy and the amount of random samples. For example, I could ensure that I chose at least 40 results to increase accuracy. I could also get as many opinions as possible or do different types of experiments. I could increase the number of times I carry out each of the tests with different pupils each time; this would improve accuracy even more.
Further work
If I were ever to do this experiment again, I could consider investigating another of the key factors involved with this investigation. For example, I could change the type of comparison e.g. IQ to Key Stage 2 Level.
