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# S1 Regression Watch

1. In this question (and others like it) how do you know, when working out b I know you have sxy on the top but on the bottom how do you know which it will be sxx or syy

Is it because the teacher is trying to measure the physics mark compared to the maths mark so the physics mark will be the dependant variable (syy)?
2. Yup, it would make sense that if the guy wants check if change in x results in change in y, then x is the independent variable and y is the dependent variable. But I have no clue what this is about.
3. If the teacher thinks that the physics mark depends on the maths ability, then maths would be the independent, and physics would be the dependent.
4. (Original post by aznkid66)
Yup, it would make sense that if the guy wants check if change in x results in change in y, then x is the independent variable and y is the dependent variable. But I have no clue what this is about.
(Original post by Vince xD)
If the teacher thinks that the physics mark depends on the maths ability, then maths would be the independent, and physics would be the dependent.

Thanks!

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Updated: April 11, 2013
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