Question

Construct ‘ogive’ for the following distribution

C.I 0-3 3-6 6-9 9-12 12-15

F 9 3 5 3 1

Answer 1

Solution:

1) Less than type distribution:

To find the less than distribution and less than ogive,take upper class interval of each class and make a table,then write first frequency,and successive freq by adding one after another,see table in attached figure

Coordinates for less than ogive

(3,9) ,(6,12), (9,17), (12,20), (15,21)

2) More than type distribution:

To find the more than distribution and more than ogive,take lower class interval of each class and make a table,then write addition of frequencies,and successive freq by subtracting one after another,see table in attached figure

Coordinates for more than ogive

(0,21) ,(3,12),(6,9), (9,4), (12,1)

Like any ordinary graph plot these points and joined with smooth curve.

See attachment for 'ogive'

Hope it helps you.

Answer 2

I hope my answer will help u......