Introduction to Data Interpretation
Direction: The following bar chart represents the number of first year B. Com. students of St Xavier’s College using different companies’ smartphones. Study bar chart and answer the questions.
- What percentage of girls are using the smartphones of Nokia?
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According to given bar graph , we have
Number of Girls who use smart phones = 180 + 60 + 120 + 20 = 380
Number of Girls who use smart phones of Nokia = 120∴ Required percentage = Number of Girls who use smart phones of Nokia × 100 Number of Girls who use smart phones
Correct Option: D
According to given bar graph , we have
Number of Girls who use smart phones = 180 + 60 + 120 + 20 = 380
Number of Girls who use smart phones of Nokia = 120∴ Required percentage = Number of Girls who use smart phones of Nokia × 100 Number of Girls who use smart phones Required percentage = 120 × 100 = 31.58% 380
- What percentage of boys are using the smartphones of Samsung?
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As per the given bar diagram , we see
Number of Boys who use smart phones = 100 + 160 + 240 + 40 = 540
Number of Boys who use smartphones of Samsung = 100∴ Required percentage = Number of Boys who use smartphones of Samsung × 100 Number of Boys who use smart phones
Correct Option: C
As per the given bar diagram , we see
Number of Boys who use smart phones = 100 + 160 + 240 + 40 = 540
Number of Boys who use smartphones of Samsung = 100∴ Required percentage = Number of Boys who use smartphones of Samsung × 100 Number of Boys who use smart phones Required percentage = 100 × 100 = 18.52% 540
- The ratio of the number of boys to the number of girls using the smartphones of Samsung and Sony together is
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On the basis of given graph in question , we have
The number of boys using the smartphones of Samsung and Sony = 100 + 160 = 260
The number of girls using the smartphones of Samsung and Sony = 180 + 60 = 240
Required ratio = The number of boys using the smartphones of Samsung and Sony : The number of girls using the smartphones of Samsung and SonyCorrect Option: B
On the basis of given graph in question , we have
The number of boys using the smartphones of Samsung and Sony = 100 + 160 = 260
The number of girls using the smartphones of Samsung and Sony = 180 + 60 = 240
Required ratio = The number of boys using the smartphones of Samsung and Sony : The number of girls using the smartphones of Samsung and Sony
Required ratio = 260 : 240 = 13 : 12
Direction: Study the double bar graph given below and answer the questions.
- The percentage of students of class VIII participating in cultural event out of total participants of cultural event is
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According to given bar graph , we have
Total number of participants in cultural events = 180
Students of class VIII = 45Required percentage = 45 × 100 180
Correct Option: B
According to given bar graph , we have
Total number of participants in cultural events = 180
Students of class VIII = 45Required percentage = 45 × 100 = 25% 180
- The ratio of the participants in exhibition of class IX with the total participants of class IX is
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On the basis of given graph in question ,
Number of participants in exhibition of class IX = 75
Total participants of class IX = 75 + 30 = 105Correct Option: A
On the basis of given graph in question ,
Number of participants in exhibition of class IX = 75
Total participants of class IX = 75 + 30 = 105
Required ratio = 75 : (75 + 30) = 75 : 105 = 5 : 7
