Question

0 - 10
10 - 20
20 - 30
30-40
40-50
6
10
12
Marks obtained
No. of students
32
20
Find the mode of the following distribution of marks obtained by 80 students:​

Answer 1

Answer:

36.50

Step-by-step explanation:

Modal class =30−40

So we have, l=30,f

0

=12,f

1

=32,f

2

=20 and h=10

⇒ Mode=l+

2f

1

−f

0

f

2

f

1

−f

0

×h

=30+

2×32−12−20

32−12

×10

=30+6.25

=36.25

∴ Mode =36.25