Question

among the group of students, 10% scored marks below 20, 20% scored between 20 and 40,35% scored between 40 and 60, 20% scored between 60 and 80. The remaining 30 students scored marks between 80 and 100.Prepare a frequency distribution table from the above information

Answer 1

Solution:

Percentage of remaining students= 100-(10+20+35+20)

=100-85

=15%

Let the total number of student be x.

15% of x=30

x=30×100÷15=200

Marks scored No.of students

0-20 10%of 200=20

20-40 20%of 200=40

40-60 35%of 200=70

60-80 20%of 200=40

80-100 15%of 200=30

Total=200

Now you have to draw histogram diagram on graph....