1800 calories is the GDA (Guidline Daily Amount), but if you are underweight (and need to gain weight) try to consume more. If you are overweight (and need to lose weight) try to consume less.
Between 1,200 and 1,400 calories, on average.
The recommended daily amount of calories for a 14 year old girl is between 1,800 and 2,400. The requirement is based on level of activity, so the more active you are, the more calories are required.
The number of calories that someone should consume in a day depends on the person. A young girl will consume less than a young boy for example.
This depends on whether she is still growing or not. Some girls have stopped growing very early on and will need less calories to keep their body weight the same. If they would still be growing, they would need more calories to help their bodies. For a 16 year old girl that is still growing, I'd recommend 2500 calories a day. If not growing, 2000 calories would be enough, as recommended for women in general.
15 or 35, all diets should be based on your height and weight to make sure you get the daily recommended calories.
About 1,600, with moderate exericse and healthy choices.
Probably, yes.
It depends on height and weight, but in general, the recommended calorie range for someone that age trying to lose weight would be anywhere from 1,500-1,800 calories a day.
1500 calories
about 1000 - 1100 calories
No. While it is on the higher side of what is recommended for that general age and height group (the range is wide, from 1,400 to 2,000 calories), about 1,900 calories is especially good if she is active or participates in sports, or other hobbies that keep the body moving. It is also very good if the calories come from healthier foods and bevarages, and not too many from fats or sugars.
There is no set number of calories any human being should have. There are recommendations for daily caloric intake but nothing concrete. A typical 16 year old girl will burn about 1500 to 2500 calories/day depending on her level of activity, metabolism, etc. If the girl at question is overweight, change the current diet and encourage exercise or sports.