Question

Observe the following histogram and answer the related questions:

1. In which class interval, are the maximum number of students?

2. In which class intervals, is the number of students 200?

3. The sum of the number of students in the class intervals 10-15 and 20-25 is

​

Answer 1

Answer:

There are three columns (135−140),(140−145),(145−150) who represent height more than or equal to 135 cm but less than 150 cm

So, No. of students that have height more than or equal to 135 cm but less than 150 cm=14+18+10=42

(b)

From histogram least number of students in any class interval are 4

The least number of students are in the class interval 150−155.

(c)

Class size = Upper limit - Lower limit

=130−125=5 is the class size.

(d)

There are three columns (125−130),(130−135),(135−140) who represent height less than 140 cm

Students that have height less than 140 cm=6+8+14=28

Answer 2

Answer:

1. 25 age and 500 students
2. 10 age
3. 300+500 =800