Actually at the age of 13 an average height for a girl is 63 inches and for a boy it would be 62 inches. For these heights an average weight for a girl is 105 lbs and for a boy it would be 100lbs. But the recommended weight for 6'2 height is 170 lbs.
average height for a one year old girl is 32 inches average weight for a one year old girl is 24.75 lb average height for a one year old boy is 33.75 inches average weight for a one year old boy is 27 lb
The average height of a 9-year old boy is 47-inches, and average weight is 63.8 pounds. Children of this age often experience growth spurts, adding what seems like inches overnight, and a rapid gain or loss of weight.
There is no 'average' weight for a 7-year-old girl because weight is related to height and body composition. For in-depth information about weight in relation to height, and to see the distribution of weights and heights of children at various ages.