Question

For the following incomplete distribution of marks of 100people.Median mark is note to be 32.What is the mode mark ?
Marks. No of students
0-10. 10
10-20. ?
20-30. 25
30-40. 30
40-50. ?
50-60. 10

Answer 1

Answer:

75+x+y=100

        x+y=25

f=30,h=10,cf=35+x,  

2

n

​  

=50

Median=l+(  

f

2

n

​  

−cf

​  

)×h    

 32=(  

30

50−35−x

​  

)×10              

             

  32−30=  

3

15−x

​  

   

   6=15−x

             

  x=9

     ∴y=16

Explanation: