Have you ever looked at your test scores or a report card and wondered, “What does it mean to be in the 90th percentile?” Or ...

What does that mean? I'm still worried ... If a child's weight is at the 50th percentile line, that means that out of 100 normal children her age, 50 will be bigger than she is and 50 smaller.

For context, median refers to the middle value, or 50th percentile, meaning half of surveyed households reported more income ...