Level 2- Bar Graph Practice Quiz -3- Medium

Directions for questions 1 – 5: Study the following graph carefully and answer the questions that follow. The graph shows the results of students in a school.

  1. The difference of the number of students passed to those failed is minimum in which year?

A. 1991-92
B. 1992-93
C. 1993-94
D. 1994-95
Answer: A
The difference between the number of students passed to failed for 1991- 92 = 150-100 = 50
The difference between the number of students passed to failed for 1992- 93 = 200-100 = 100
The difference between the number of students passed to failed for 1993- 94 = 300-50 = 250
The difference between the number of students passed to failed for 1994- 95 = 250-100 = 150
The difference is minimum for 1991-92,So, answer is A option.
2.How many times number of failed students is same?
A. 1
B. 2
C. 3
D. 4
Answer: D
By visual observation number of failed students is same in 1991-92, 1992-93, 1994-95,and 1995-96. Therefore, answer is four times.

 

3. What is an approximate percentage of students failed during 5 years?

A. 65%
B. 27%
C. 51%
D. 80%
Answer: B
For 1991-92 Passed = 150, Failed = 100
For 1992-93 Passed = 200, Failed = 100
For 1993-94 Passed = 300, Failed = 50
For 1994-95 Passed = 250, Failed = 100
for 1995-96 Passed = 300, Failed = 100
Required % = Total number of passed students / Total number of failed students = (100 + 100 + 50 + 100 + 100) / (250 + 300 + 350 + 350 + 400)
= 450 / 1650
= 27.27% ≅ 27%

 

4.  When is the percentage increase in the total number of students maximum in comparison to the previous year?

A. 1995-96
B. 1994-95
C. 1993-94
D. 1992-93
Answer: D
In the year 1992-93, % increase = 100 x (300 – 250) / 250 = 20%
In the year 1993-94, % increase = 100 x (350 – 300) / 300 = (50 / 3)% = 16.6%
In the year 1994-95, % increase = 100 x (350 – 350) / 350 = 0%
In the year 1995-96, % increase = 100 x (400 – 350) / 350 = 14.2%.
Therefore, 20% is highest. Hence option A.

5. What is an average number of students failed in the school in last 5 years?

A. 190
B. 180
C. 80
D. 90
Answer: D
Total number of failed students = 100 + 100 + 50 + 100 + 100 = 450
Therefore, the required average = 450/5 = 90

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