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Introduction to Data Interpretation

Direction: Study the following histogram of marks in mathematics (out of 50) of students in a class and answer the following questions.

  1. The total number of students in the class is :
    1. 120
    2. 125
    3. 130
    4. 135
Correct Option: D

From the given above histogram , we have
Number of students in the class interval 25-30 = 15
Number of students in the class interval 30-35 = 20
Number of students in the class interval 35-40 = 40
Number of students in the class interval 40-45 = 50
Number of students in the class interval 45-50 = 10
Total students in the class ⇒ 15 + 20 + 40 + 50 + 10 = 135



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