Night Class: Data Interpretation Quiz

Directions : Study the following Grpah carefully and answer the questions given below:

Number of Students Appearing for Aptitude Test from Various Towns (Number in thousands)


1. What is the average number of students appearing for Aptitude test from all the Towns together?
1) 33500 
2) 3350 
3) 17500 
4) 33.5 
5) None of these


2. The number of students appearing for the Aptitude test from Town D is approximately what percent of the number of students appearing for the Aptitude test from Town C?
1) 243 
2) 413 
3) 134 
4) 341 
5) 143

3. What is the respective ratio of the number of students appearing for the Aptitude test from Town C and D together to the number of students appearing for the Aptitude test from Town A, D and E together?
1) 11 : 13 
2) 20 : 43 
3) 20 : 47 
4) 37 : 20 
5) None of these

4. What is the respective ratio of the number of students appearing for the aptitude test from Town B to Town A?
1) 3 : 4 
2) 13 : 16 
3) 11 : 16 
4) 2 : 3 
5) None of these

5. The number of students appearing for the aptitude test from Town E is approximately what percent of total number of students appearing for the Aptitude test from all the Towns together?
1) 15 
2) 17 
3) 19 
4) 21 
5) 23

Directions: In the given pie -charts the distribution of passed students from six different colleges (A, B, C, D, E and F) of a city during the year 2012 and 2013 is given. In the line graph the percentage of boys passed in year 2012 and the percentage of girls passed in 2013 is shown. Answer the following questions based on these graphs.
Total students passed in 2012 = 30000 
Total students passed in 2013 = 40000



6. What is the number of female students passing in 2012 from College C?
1) 2000 
2) 2300 
3) 2400 
4) 2500 
5) 2700

7. What is the number of male students passing in year-2013 from College F?
1) 5760 
2) 5750 
3) 5740 
4) 5730 
5) 5720

8. What is the total number of females passing in 2012 from all colleges?
1) 14645 
2) 15645 
3) 16645 
4) 17645 
5) 18645

9. What is the difference between the number of male students passing in year 2013 and that of female students passing in the same year?
1) 1690 
2) 1680 
3) 1670 
4) 1660 
5) 1650

10. Number of boys passing from College E in 2012 is what percentage of the number of boys passing from College C in year 2013?
1) 70% 
2) 80% 
3) 90% 
4) 100% 
5) 110%


Answers:
1. 1
Reqd avg marks = (40 + 32.5 + 17.5 + 42.5 + 35)/5 thousand
= 16.5 * 1000/5 = 33500

2. 1
Reqd pecentage = (42.5 * 1000)/(17.5 * 1000) * 100%
= 243% approx

3. 1
Required ratio = (17.5 + 42.5)thousand : (40 + 42.5 + 35) thousands
= 60 : 117.5
= 20 : 39.16
= 20 : 39

4. 2
Reqd Ratio = 32500 : 40000

5. 4
Reqd percentage = (35000 * 100)/(40 + 32.5 + 17.5 + 42.5 + 35) * 1000 * 100%
= 35000/1675% = 21% approx

6. 5
50% of (64.8/360 * 30000)
= 50/100 * 5400 = 2700

7. 60% of (86.4/360 * 40000) = 60/100 * 9600
= 5760

8. 2
Total = 30000/(360 * 100) [54 * 40 + 90 * 55 + 64.8 * 50 + 50.4 * 60 + 43.2 * 45 + 57.6 * 60]
30000/(360 * 100) [2160 + 4950 + 3240 + 1944 + 3456]
30000/36000 * 18774 = 15645

9. 2
Total boys = 4000 + 4800 + 1800 + 1600 + 2880 + 5760 = 20840
Total girls = 40000 - 20840 = 19160
Diff = 20840 - 19160 = 1680

10. 5
E-Boys2012 = 43.2/360 * 30000 * 55/100 = 1980
C-Boys2013 = 36/360 * 40000 * 45/100 =1800
Req% = 1980 * 100/1800 = 110%






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