Answer: Your normal weight depends on your height since bones are quite heavy and you are expected to weight more if you are taller. Check out the body mass index measurement on Google. A normal BMI is between 18.5 to 24.9 for adults. Being 16 you may be slightly outside this range and still be considered to have a normal weight.
Answer: One a doctor or fitness trainer can determine what is the "normal" weight for a given person. Based on height, built, and development, that weight can vary a lot. If you are concerned about an underweight, or overweight person, please check with a doctor to get their medical opinion.The average weight for a 11 year old girl should be around 90 - 100 pounds, but also depending on her height. An average 5 ft 2 girl should be at least 90 pounds.
Answer: It depends on how tall the teenager is. If the teenager is only 5feet tall, they should weigh between 97 pounds and 123 pounds butif they are 5 feet 10 inches tall they should weigh between 132pounds and 167 pounds.