Question

The distribution of heights (in cm) of 96 children is given below

Draw a less type cumulative frequencies curve fo this data and use it to compute meidan height of the children.

Answer 1

To draw the less than type ogive, we get the points (124,0),(128,5),(132,13),(136,30),(140,54),(144,70),(148,82),(152,88),(156,92),(160,95),(164,96) and join all these points by free hand

Here, `(N)/(2)=(96)/(2)=48`
We take, y=48 in y-cordination and draw a line parallel to X-axis meets the curve at A a draw a perpendicular line from point A to the X-axis and this line meets the X-axis at the point which is the median i.e. median=141.17