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Data Collectionmedium
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A researcher uses ratio estimation Y^R=yˉxˉX\hat{Y}_R = \frac{\bar{y}}{\bar{x}} XY^R​=xˉyˉ​​X. Given yˉ=20,xˉ=10\bar{y}=20, \bar{x}=10yˉ​=20,xˉ=10 and X=500X=500X=500, what is Y^R\hat{Y}_RY^R​?