The Forced Expiratory volume (FEV) is a primary indicator of lung function and c

Question

The Forced Expiratory volume (FEV) is a primary indicator of lung function and corresponds to the volume of air that can forcibly be blown out in the first second after full inspiration. A sample was collected from 654 children. This sample was analyzed, and the partial Stata output is provided below. The variable height contains the height of each child (inches), and the variable fev contains the forced expiratory volume for each child (liters). j. What would happen to the value of R^2 if instead of using measuring height in inches, we measured height in centimeters? A. R^2 would increase. B. R^2 would decrease. C. R^2 could increase or decrease, but we cannot specify which would occur. D. R^2 would remain the same.

Explanation / Answer

D) R2 will remain the same.

Adding, subtracting, multiplying or dividing a constant to all of the numbers in one or both of tge variables do not change the coefficient of determination.

Here we multiple a variable to change its unit, it will not change coefficient of determination.

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