Population Study Published: 02 September 2015 LMS tables for waist-circumference and waist-height ratio Z-scores in children aged 5–19 y in NHANES III: association with cardio-metabolic risks ...

It shows the actual distribution of Z-scores (in red) and the expected normal distribution of Z-scores (in gray). As we see, the Z-score distribution is skewed heavily to the right.

Z-Score Distributions What I want to do now is look at the distributions of those Z-scores. I’ll be referencing an expected normal distribution. If Z-scores are distributed normally among the ...