#### For my investigation, I am going to see if there is a similarity between the number of hours watched of television per week and their personal IQ for year 10's and 11's in key stage 4.

Maths Coursework Introduction and Hypothesis For my investigation, I am going to see if there is a similarity between the number of hours watched of television per week and their personal IQ for year 10's and 11's in key stage 4. I am trying to prove that the less television they watch, the higher their IQ will be as TV time means less time for school work. I downloaded the data from the Internet (from edexcel) and I copied the information on to the Excel spreadsheet. Method Firstly, I will create a graph (scatter graph) to see if there is a difference between the number of hours watched of television per week and their personal IQ of both males and females together. The formula for the line of best fit (trend line) will identify if there is any relationship. The closer the integer in front of the 'x' is to zero, the less there is any correlation. I will then split up the data into males and females and repeat the process drawing scatter graphs for each and comparing the slopes hence the relationship. At this stage, I would like to look at the distribution of males and females in these years. As it is easier to compare the data visually, I will use the function facility on the spreadsheet to calculate the maximum, the minimum, the lower and upper quartiles and the median. I will use these values to draw box plots. I will also use a method called 'Stratisfied sampling'

#### Maths data handleling

st Hypothesis The relationship between TV hours watched per week and IQ I a going to predict that the amount of TV watched per week can affect your IQ making it less (Male and Female). This will show me which if there is a relationship between watching TV and IQ. I predict that as boys watch more TV their IQ will go down. I expect this to happen because TV has been shown to affect your mood or make you forget more. 2nd Hypothesis The relationship between Number of siblings and IQ Then I will predict that the more siblings you have can make your IQ higher (Male and Female). This will show me whether there is a relationship between IQ and Number of siblings. I expect this to happen because in many families with lots of children, knowledge is shared between brothers and sisters (More help is available basically) I took a sample of 50 students from Mayfield high school, 10 from year 7 to year 11. I split them into girls and boys so all together there were 25 girls and 25 boys, 5 girls and boys in each year. I used the random number generator to get all of this sample by typing in the calculator 'Shift' 'Rand#' then when you get the number you times it by how many there are in the sample. Say there are 200 then you would do 'shift' 'rand#' times 200. This would then not let the number be greater than 200 because if it was bigger than 200 it would take a long time to get my

#### Discuss the role of genetics & cultural differences in the development of intelligence.

MORAL DEVELOPMENT DISCUSS THE ROLE OF GENETICS & CULTURAL DIFFERENCES IN THE DEVELOPMENT OF INTELLIGENCE. A study into IQ and genetics by Plomin et al. (1997) found from a longitudinal study of 245 children adopted (before the age of 1) that there was a correlation between the child and both sets of parents. Common sense suggests that as the child grew older they would become more like adoptive parents. However, this was not the case, instead the opposite happened in IQ, in adolescence there was no correlation with adoptive parents, the correlation wit biological parents remained. There was no difference adopted children and a control group who remained with biological parents. By adolescence both groups had come IQ correlation with biological parents. This study suggests that genetics have a strong influence on IQ. Bouchard & McGue (1981) carried out a study into the relationship between IQ and genetics by using a twin study. They reviewed 111 studies of twins and concluded that the mean correlation of intelligence in identical twins is 0.86, whereas for fraternal twins it is 0.6. A criticism of this study is that people who share genetic similarities tend to share environmental similarities, which makes it unclear whether it is genetics or the environmental that affects intelligence. 'Culture' refers to the rules, morals and methods of interaction that bind a group of

#### In this investigation I am going to look into the number of goals scored against the league position in the 2002/03 season.

Goal In this investigation I am going to look into the number of goals scored against the league position in the 2002/03 season. I want to take 5 teams out of the league because this gives a variety data so it will be accurate. To get these teams I will use a random numbers devise and the numbers it says I will use the corresponding league position e.g. if it picks out number 5 I would use the team that came 5th in the league which was Liverpool. I am using this method because it is easy to use and it will give a cross-section of the league. That should help me get accurate data. When I used the random number devise. Which was 'ran#' button on my calculator. They results where as follows- Number Team Goals 6 Aston Villa 42 4 Chelsea 68 Man Utd 74 8 West Ham 42 9 Man City 47 To find out if there is a link between league position and goals I will use a line graph. My Prediction is that they will be a strong coloration between the two. I base this upon the fact to get higher in the league you need to get points which means winning games and to win games you need to score goals. Graph 1 shows a strong inverse correlation between goals and league position. So the lower (1st being the lowest and 20th being the highest) the league position the higher the amount of goals scored. I will now look to see weather the amount of goals scored against makes a

#### Comparison of IQ means of all years

Analysis of the data, and checking the hypotheses Comparison of IQ means of all years Hypothesis 1- IQ levels increase from year to year. Mean IQ: for year 7 is (104.1+102.4)/2=103.25 for year 9 is (101.4+109.5)/2=105.45 for year 11 is (99.8+101.8)/2=100.8 From the above, we can see that the mean IQ increases from year 7 to year 9, but then goes down in year 11. We can see the same pattern here as in the Pre-survey, where IQs of one or two pupils in year 11 are low, and that makes the mean for the whole group smaller. A bigger sample is required to check whether hypothesis 1 was correct. Hypothesis 2- IQ levels of pupils doesn't depend on whether they are left or right-handed. In year 7 the mean IQ is higher for the left-handed (LH) then for the right-handed (RH). In year 9 it is the other way round. In year 11 the means are about the same for both the LH and RH groups. Hence, hypothesis 2 was correct. Hypothesis 3- There will be a higher number of children with an IQ lower than the mean for their year group; in all years; however there will be some pupils with a high IQ which will increase the mean. We can see from the Box and Whisker diagrams that in year 7 there are about the same number of children with IQs lower than the mean as children with IQs higher than the mean. In year 9, a bigger proportion of children have IQs higher than the mean IQ. In year 11, it is

#### Data handling - Hypotheses- Is there any correlation between the children's favourite sport and favourite subject in yr 8.?

Data handling coursework task Hypotheses > Is there any correlation between the children's favourite sport and favourite subject in yr 8.? > Do older people have a higher IQ than younger? > Do girls have a higher IQ than boys? > What is the most popular subject in yr 7? > Are girls smaller than boys? Q. Is there any correlation between the children's favourite sport and favourite subject in yr 8.? Result: I found out that I cannot do this hypotheses because it doesn't have any Quantitive data the data is all Qualitative. Do girls have a higher IQ than boys? The graph I am going to use to show this piece of data is the frequency polygon. In order to do this I will need to construct 2 tally charts to represent boys and girls. To Boys Girls Here is my graph Result: from the graph I can conclude that the boys and girls have the same IQ so the group is average. Q. What is the most popular subject in yr 7? Here is a tally chart to show the frequency and angle of the different subjects. The chart I am going to use is a pie chart Here is a pie chart to show my results. Result; from this graph it shows clearly that P.E is the most popular subject in yr7 > Do girls have a higher IQ than boys? To show this data I used random sampling to get 30 numbers when I did this I then used excel to locate yr 10 and 11 pupils from this data I used the sort function and put

#### Business Report part 6 (graph1)

Graphs The graph shows that there are more females than males. This graph shows the amount of people who carry a mobile. Most people carry a mobile. This is a good sign as we know that people in that area are used to mobiles. This graph shows the model or brand people would like to buy if they were considering buying one. From my results I could clearly see that Nokia is a popular type of mobile. This graph shows the maximum amount people would spend on a mobile phone. Most people choose £100-£200. This is a good result because of course any customer would want a good mobile and the staff can provide them with a mobile to their satisfaction because most mobiles are available in this