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# Statistics Questions - Assignment Example

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What is the elevation of the line at X=0? tanθ=1.4954 θ=tan^(-1) (1.4954)=47.70° When X increases, does Y increase or decrease? How much does Y change when X increases by 1?…

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Download file to see previous pages What is the elevation of the line at X=0? tanθ=1.4954 θ=tan^(-1) (1.4954)=47.70° When X increases, does Y increase or decrease? How much does Y change when X increases by 1? Based on the positive value of the gradient, when X increases, Y also increases. The equation of the line of best fit is given by Y=1.4954X+11.847 For, X=1 Y=1.4954(1)+11.847=13.3424 How much of the variation in Y is accounted for by X? Based on the value of R^2, 48.96% of the variation in Y is accounted for by X. What is the predicted value of Y at X = 5? The value of Y predicted at X=5 is 19.324 In terms of the range of the X data, why is the predicted value of Y at X = 5 reliable? The predicted value of Y is reliable because the confidence interval for the mean of Y is 99.37% which shows the predicted value is fairly close to 100%. ...Download file to see next pagesRead More
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