Question

22. Find the mode of the following distribution of marks obtained by the students in an examination
Marks
0-20 20-40 40-60 60-80 80-100
No. of students 12
21
28
16
23​

Answer 1

Step-by-step explanation:

to find mode

1) find the modal class, (class with highest frequency is called modal class)

in this case the modal class is 40-60 as 28 is the highest frequency

2) l = lower limit of modal class, in this case its 40

   f1 =frequency of modal class, in this case its 28

   f0= frequency of class before the modal class, in this case its 21

   f2 =frequency of class after the modal class, in this case its 16

   h =class size, that is the difference between upper limit and lower limit, in this case its 20

then just substitute the values in formula.

hope this helps:)