Question

0-20
20-40
40-60
60-80
80-100
Time
(in sec)
No. of
students
8
10
13
6
3​

Answer 1

Answer:

L = 40

h= 20

f¹ = 13

f²= 6

fⁿ= 10

Mode = L+ (f¹-fⁿ/2f¹- fⁿ-f²)×h

= 40+(13-10/2×13-10-6)×20

= 40+( 3/26-16)×20

= 40+(3/10)×20

= 40+ 60/10

= 40+ 6

= 46