Final answer:
Body mass index (BMI) is used to determine a person's weight category based on their height and weight. A BMI less than or equal to 17.5 is considered at least 15% below the expected weight for an adult's height, and a BMI less than the 5th percentile is considered below the expected weight for a child's age group.
Step-by-step explanation:
Body mass index (BMI) is a measurement used to determine a person's weight category based on their height and weight. Body mass index (BMI) is used to determine a person's weight category based on their height and weight. A BMI less than or equal to 17.5 is considered at least 15% below the expected weight for an adult's height, and a BMI less than the 5th percentile is considered below the expected weight for a child's age group.
A BMI between 18 and 24.9 is considered normal weight, a BMI between 25 and 29.9 is considered overweight, and a BMI of 30 or higher is considered obese. In adults, a BMI less than or equal to 17.5 is considered at least 15% below the expected weight for their height. In children, a BMI less than the 5th percentile is considered below the expected weight for their age group.