Height-for-age (HAZ), weight-for-age (WAZ), and weight-for-height (WHZ) scores for children under 5 years are based on a transformation of height, weight, and age into bivariate relationships. This report aims to improve understanding of how changes in these measurements can induce changes in the means and standard deviations of HAZ, WAZ, and WHZ, as well as stunting, wasting, underweight, and overweight estimates. Data from Peru and Nepal were used because of their different nutritional profiles and evidence of good data quality.