The heights of women aged 20 to 29 are approximately Normal with mean 64.3 inches and standard deviation 2.7 inches. Men the same age have mean height 69.9 inches with a standard deviation 3.1 inches (McDowell et al. "Anthropometric reference data for children and adults: United States, 2003-2006," National Health Statistics Reports, No. 10 [October 2008] at www.cdc.gov/nchs).

Describe in lay terms what information the z scores give that the original non-standardized heights do not. (Max 4 sentences)