The 5th percentile for height means that only 5 percent of the children at this age are at that height or shorter. That means that 95 percent of the children at Emily's age are taller. The weight is very similar. Only 7 percent of the children Emily's age weigh the same or less than she does, meaning that 93 percent weigh more. What you now know is that her height and weight are in proportion and that she is small for her age.