Data Interpretation questions test one's ability in analysing data, inspecting the elements in data and interpreting them to extract maximum information from the given set of data or information. The data is usually given in the form of charts, tables and graphs.
Practise with our Data Interpretation questions and answers to help you know what to expect, improve your speed and confidence and be really prepared for the actual test.
Study the following line graph which gives the number of students who joined and left the school in the beginning of year for six years, from 1996 to 2001.
Initial Strength of school in 1995 = 3000.
92.13%
93.75%
96.88%
97.25%
Correct answer is B
Required percentage = ( 3000/3200 x 100 ) % = 93.75%
Study the following line graph which gives the number of students who joined and left the school in the beginning of year for six years, from 1996 to 2001.
Initial Strength of school in 1995 = 3000.
The strength of the school incresed/decreased from 1997 to 1998 by approximately what percent?
1.2%
1.7%
2.1%
2.4%
Correct answer is B
Important data noted from the given graph:
In 1996 : Number of students left = 250 and number of students joined = 350.
In 1997 : Number of students left = 450 and number of students joined = 300.
In 1998 : Number of students left = 400 and number of students joined = 450.
In 1999 : Number of students left = 350 and number of students joined = 500.
In 2000 : Number of students left = 450 and number of students joined = 400.
In 2001 : Number of students left = 450 and number of students joined = 550.
Therefore, the numbers of students studying in the school (i.e., strength of the school) in various years:
In 1995 = 3000 (given).
In 1996 = 3000 - 250 + 350 = 3100.
In 1997 = 3100 - 450 + 300 = 2950.
In 1998 = 2950 - 400 + 450 = 3000.
In 1999 = 3000 - 350 + 500 = 3150.
In 2000 = 3150 - 450 + 400 = 3100.
In 2001 = 3100 - 450 + 550 = 3200.
Percentage increase in the strength of the school from 1997 to 1998
= [ (3000 - 2950)/2950 x 100 ] % = 1.69% ≈ 1.7%.
Study the following line graph which gives the number of students who joined and left the school in the beginning of year for six years, from 1996 to 2001.
Initial Strength of school in 1995 = 3000.
1997
1998
1999
2000
Correct answer is A
The percentage rise/fall in the number of students who left the school (compared to the previous year) during various years are:
For 1997 = [ (450 - 250)/250 x 100 ] % = 80% (rise).
For 1998 = [ (450 - 400)/450 x 100 ] % = 11.11% (fall).
For 1999 = [ (400 - 350)/400 x 100 ] % = 12.5% (fall).
For 2000 = [ (450 - 350)/350 x 100 ] % = 28.57% (rise).
For 2001 = [ (450 - 450)/450 x 100 ] % = 0%.
Clearly, the maximum percentage rise/fall is for 1997.
Study the following line graph which gives the number of students who joined and left the school in the beginning of year for six years, from 1996 to 2001.
Initial Strength of school in 1995 = 3000.
The number of students studying in the school during 1999 was?
2950
3000
3100
3150
Correct answer is D
As calculated above, the number of students studying in the school during 1999 = 3150.
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