Question

The table below shows the data on likely heights of boys and girls as they grow in age. Draw graphs showing height and age for both boys and girls on the same graph paper. What conclusions can be drawn from these graphs?

Age (Years)	Height (cm)
	Boys	Girls
0	53	53
4	96	92
8	11	110
12	129	133
16	150	150
20	173	165

Answer 1

From birth, both girls and boys are the same height. Girls become shorter than guys as they get older. Girls get taller than males when they reach the age of 12 (puberty age for girls), and this continues until the age of 15. At 16, both reach the same height. At the age of 20, girls again become shorter than boys.

It indicates that puberty causes a dramatic increase in height due to the development of long bones in the legs and arms. Initially, girls develop quicker than boys, but by age 18, both boys and girls have reached their maximum height, with girls generally being shorter than boys.