Question

its for 90 points ...........
all...........
Present the following data in the form of 'less than' ogive and 'more than' ogive. Class (Mark obtained) Number of student

0-10 5

10-20 10

20-30 12

30-40 20

40-50 13

50-60 20

60-70 18

70-80 02

Answer 1

Solution:

To present the given distribution in less than type:

Marks obtained ______ Students

less than 10____________5

less than 20____________15

less than 30____________27

less than 40____________47

less than 50____________60

less than 60____________80

less than 70____________98

less than 80____________100

To draw less than ogive, points are

(10,5) (20,15) (30,27) (40,47) (50,60) (60,80) (70,98) (80,100)

More than type distribution:

Marks obtained ______ Students

More than 0____________100

More than 10____________95

More than 20____________85

More than 30____________73

More than 40____________53

More than 50____________40

More than 60____________20

More than 70____________2

To draw More than ogive, points are

(0,100) (10,95) (20,85) (30,73) (40,53) (50,40) (60,20) (70,02)

Now one can draw both types of ogive on the same graph.