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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 ...
read lessIf 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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