GCSE Maths questions

• Develop your confidence and skills in GCSE Maths using our free interactive questions with teacher feedback to guide you at every stage.
• Level: GCSE
• Questions: 75

Maths data handleling

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.

• Word count: 784

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Comparison of IQ means of all years

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.

• Word count: 555

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

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.

• Word count: 657

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

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 16 Aston Villa 42 4 Chelsea 68 1 Man Utd 74 18 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.

• Word count: 633

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