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If the points in a scatter diagram tend to duster in a straight line which makes an angle of 30° with the X-axis, what would you say about the strength of association between X and Y?

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Financial Accounting Teacher

If the points in a scatter diagram tend towards a straight line or fall on a straight line then thestrength of association between X and Y is Strong. It is a linear correlation. And as you mentioned that the straight line is making an angle of 30 degrees with X-axis, that means it is a positive correlation.......
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If the points in a scatter diagram tend towards a straight line or fall on a straight line then thestrength of association between X and Y is Strong. It is a linear correlation. And as you mentioned that the straight line is making an angle of 30 degrees with X-axis, that means it is a positive correlation.... read more. If the points in a ...

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If the points in a scatter diagram tend towards a straight line or fall on a straight line then the strength of association between X and Y is Strong. It is a linear correlation. And as you mentioned that the straight line is making an angle of 30 degrees with X-axis, that means it is a positive correlation....
read more

If the points in a scatter diagram tend towards a straight line or fall on a straight line then the strength of association between X and Y is Strong. It is a linear correlation. And as you mentioned that the straight line is making an angle of 30 degrees with X-axis, that means it is a positive correlation. Mathematically the equation of that straight line will be √3y=x. So for every unit change in X there will be  √3 unit change in Y. 

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