Introduction to Data Interpretation
Direction: Study the following Histogram and answer the following questions.
 The maximum number of students got the marks in the interval of

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From the given above histogram , we can see Students in class interval 20–30 = 10 , which is maximum .
Correct Option: B
From the given above histogram , we can see that the maximum number of students got the marks in the interval of 20–30 = 10 . Hence , required answer is option B.
 The total number of students involved in the data is

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According to given bar graph , we have
Number of students who obtained marks 010 = 4
Number of students who obtained marks 1020 = 6
Number of students who obtained marks 2030 = 10
Number of students who obtained marks 3040 = 8
Number of students who obtained marks 4050 = 5Correct Option: A
According to given bar graph , we have
Number of students who obtained marks 010 = 4
Number of students who obtained marks 1020 = 6
Number of students who obtained marks 2030 = 10
Number of students who obtained marks 3040 = 8
Number of students who obtained marks 4050 = 5
Required total number of students = 4 + 6 + 10 + 8 + 5 = 33
Direction: The Histogram shown the marks of 50 students in an examination. Examine the diagram and answer the questions. [Marks are given in integers only].
 What percent of students did obtain marks above 60?

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On the basis of given graph in question ,
Number of students obtaining above 60 marks = 35
Total number of students = 1 + 4 + 2 + 8 + 10 + 12 + 5 + 8 = 50∴ Required percentage = Number of students obtaining above 60 marks × 100 Total number of students
Correct Option: C
On the basis of given graph in question ,
Number of students obtaining above 60 marks = 35
Total number of students = 1 + 4 + 2 + 8 + 10 + 12 + 5 + 8 = 50∴ Required percentage = Number of students obtaining above 60 marks × 100 Total number of students Required percentage = 35 × 100 = 70% 50
 How many students obtained more than 39 but below 60?

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According to given bar graph , we have
Number of students who marks obtained range 4050 = 2
Number of students who marks obtained range 5060 = 8
Required number of students = 2 + 8 = 10Correct Option: C
According to given bar graph , we have
Number of students who marks obtained range 4050 = 2
Number of students who marks obtained range 5060 = 8
Required number of students = 2 + 8 = 10
Therefore , the number of students who marks obtained more than 39 but below 60 is 10.
Direction: Study the bargraph and answer the following questions.
 In which wage group, is the amount of money needed to pay the monthly wages the highest?

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According to given bar graph , we have
In wage group of 1400 – 1500 ,
Number of worker = 9∴ Mean monthly wage = 1400 + 1500 = 1450 2
Correct Option: A
According to given bar graph , we have
In wage group of 1400 – 1500 ,
Number of worker = 9∴ Mean monthly wage = 1400 + 1500 = 1450 2
Required Amount = 1450 × 9 = ₹ 13050