Introduction to Data Interpretation
Direction: The numbers of different colleges in India in different years is given in the graph below. Per cent distribution of different colleges in year 1980 and 1990 is shown in pie chart
 The difference in number of management colleges in 1980 to 1990 is :

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On the basis of given graph and pie chart in question ,
Percent of Management colleges in 80’s = 10%
Number of colleges in 80’s = 20000
Percent of Management colleges in 90’s = 19%
Number of colleges in 90’s = 40000Number of Management colleges in 80’s = 20000 × 10 = 2000 100
Correct Option: C
On the basis of given graph and pie chart in question ,
Percent of Management colleges in 80’s = 10%
Number of colleges in 80’s = 20000
Percent of Management colleges in 90’s = 19%
Number of colleges in 90’s = 40000Number of Management colleges in 80’s = 20000 × 10 = 2000 100 Number of Management colleges in 90’s = 40000 × 19 = 7600 100
Required difference = 7600 – 2000 = 5600
Direction: The following piechart shows the study time of different subjects of a student in a day. Study the pie–chart and answer the following questions
 If the student studied chemistry for 3 hours, then he/she studied geography for

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On the basis of given pie chart in question ,
The student studied chemistry = 3 hours
Percent of studying chemistry students = 15%
Percent of studying geography students = 10%
∵ 15% ≡ 3 hoursCorrect Option: B
On the basis of given pie chart in question ,
The student studied chemistry = 3 hours
Percent of studying chemistry students = 15%
Percent of studying geography students = 10%
∵ 15% ≡ 3 hours∴ 10% ≡ 3 × 10 = 2 hours 15
 If the student studied 10 hours in a day, then he/she studied mathematics for

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As per the given pie chart in question ,
Percent of studying given all subject by students = 100%
Percent of studying mathematics students = 30%
The student studied in a day = 10 hours
∵ 100% ≡ 10 hours∴ 1% = 10 100 Correct Option: A
As per the given pie chart in question ,
Percent of studying given all subject by students = 100%
Percent of studying mathematics students = 30%
The student studied in a day = 10 hours
∵ 100% ≡ 10 hours∴ 1% = 10 100 ∴ 30% ≡ 10 × 30 = 3 hours 100
 Instead of 10%, if the student spends 15% to study other subjects and the time is taken from the time scheduled to study mathematics and if he/she used to study 20 hours per day, then the difference of time for studying mathematics per day is :

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On the basis of given pie chart in question ,
Percent of studying Maths students = 30%
Time spent in mathematics in a day = 20 hoursUsual time spent in studying Maths = 2 × 30 = 6 hours 100 Usual time spent in studying other subjects = 10 × 20 = 2 hours 100
Correct Option: C
On the basis of given pie chart in question ,
Percent of studying Maths students = 30%
Time spent in mathematics in a day = 20 hoursUsual time spent in studying Maths = 2 × 30 = 6 hours 100 Usual time spent in studying other subjects = 10 × 20 = 2 hours 100 New time spent in studying other subjects = 15 × 20 = 3 hours 100
Difference = New time spent in studying other subjects  Usual time spent in studying other subjects
Difference = 3 – 2 = 1 hours
Direction: The Pie chart shows the result of a survey among 119060 people concerning the use of tobacco. Study the Piechart and answer the questions.
 Let P be the percentage of people using Cigarettes, Pipe and Bidi as their smoking means and Q be the percentage of people using other means as their smoking habits. Then P is more than Q by :

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As per the given pie chart in question ,
Corresponding angle for cigarette, pipe and bidi users = 180° + 36° + 90° = 306°
Corresponding angle for other product consumers = 36°
Difference = Corresponding angle for cigarette, pipe and bidi users  Corresponding angle for other product consumers = 306 – 36 = 270°
As we know that , 360° ≡ 100%Correct Option: D
As per the given pie chart in question ,
Corresponding angle for cigarette, pipe and bidi users = 180° + 36° + 90° = 306°
Corresponding angle for other product consumers = 36°
Difference = Corresponding angle for cigarette, pipe and bidi users  Corresponding angle for other product consumers = 306 – 36 = 270°
As we know that , 360° ≡ 100%∴ 270° ≡ 100 × 270 = 75% 360