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 
114 
110 
12 
129 
133 
16 
150 
150 
20 
173 
165 
Solution
The graph depicts the relation between the age and height of both boys and girls. During puberty, there is a sudden increase in height of both boys and girls. On the basis of the above graph, it can be observed that during the age of 48 years, girls have less height as compared to boys. However, as soon as girls reach 12 13 years, their height shows a sudden increase and becomes more than boys. In later years, growth in both sexes becomes stable. Growth during puberty is under the control of hormones.