A practitioner uses PROC STDIZE with METHOD=RANGE to standardize a variable with min=10 and max=90. After standardization, a raw value of 50 maps to what standardized value?
Select an answer to reveal the explanation.
Short Explanation and Infographic
Here's the deal — b is correct because PROC STDIZE METHOD=RANGE uses the transformation: (x - min) / (max - min), which maps values to the [0,1] interval. For x=50: (50-10)/(90-10) = 40/80 = 0.5.
Full explanation below image
Full Explanation
B is correct because PROC STDIZE METHOD=RANGE uses the transformation: (x - min) / (max - min), which maps values to the [0,1] interval. For x=50: (50-10)/(90-10) = 40/80 = 0.5. The minimum value maps to 0, the maximum maps to 1. A is wrong; 0.0 would only occur if x = min. C is wrong; centering by mean is METHOD=MEAN. D is wrong; 1.0 would require x = max.