crazychameleon
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In the Biology AQA A level Specimen Paper 2 there is a question asking how you would plot a suitable graph of these data referring to a table with information on the percentage of fat in diet of a population and the death rate of women from breast cancer per 100,000 women in the same population and asking you to explain your choice.

However the mark scheme says that a scatter graph is used -

"(Because) looking at relationship between two discrete/independent variables"

Surely the data is continuous though because both variables are percentages, not integers. Moreover, we don't know that the two variables are independent since one could be dependent on the other with a causal relationship. Am I wrong or misinterpreting the mark scheme or does it, being a specimen paper, have a mistake?

The question is 9.2 of https://filestore.aqa.org.uk/resourc...-74022-SQP.PDF
Last edited by crazychameleon; 2 years ago
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crazychameleon
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