Question : Directions: Study the histogram of the marks (in mathematics) distribution of 50 students in class IX and answer the following question:
The number of students who have scored between 39 and 80 is:
Option 1: 22
Option 2: 18
Option 3: 37
Option 4: 15
Correct Answer: 22
Solution :
The number of students who have scored in the interval 40 - 60 = 18
The number of students who have scored in the interval 60 - 80 = 4
Required answer = The number of students who have scored in the interval 40 - 60 + The number of students who have scored in the interval 60 - 80
Required answer = 18 + 4 = 22
Hence, the correct answer is 22.
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