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Bar Graph Questions and Answers – Data Interpretation

Bar Graph Data Interpretation Questions with Solutions

DI is an important concept to prepare for any competitive exam and bank exams. If you are aware of a few shortcut methods, you can save time in competitive exams. Here, we are providing bar graph data interpretation questions with solutions for bank exams to practice.

Bar Graph Questions SET – 1

1. Study the following graph carefully to answer the given questions.




Data Interpretation Practice Questions

1.1) What was the percentage decrease in the number of employees in company B in the year 2008 as compared to the previous year?

 (A) 22       (B) 20.5       (C) 12.5      (D) 23.5

Solution: 
(40 – 35)/40 = 1/8 = 12.5
Explanation:
We know the formula, Percentage Change = ± [(New value –Old value)/Old value] Solve this mentally we get 1/8 and
We remember 1/8 is nothing but 12.5.

1.2) What was the approximate average number of employees in company ‘C ‘ over all the years together?

 (A) 32900             (B) 33335                   (C) 31660                     (D) 32660

Solution:   

190/6 = 31.66 thousand = 31660

Explanation:

Add values without using paper by seeing the chart and divide by 6.we can do this also without paper and pen.

1.3) What is the respective ratio between the number of employees in company-B in the year 2005  and the no. of employees in company C in the year 2007?

(A) 5 : 4                 (B) 4:5                   (C) 2:5                     (D) None of these.

1.3) Total number of employees in Company-A over all the years together was approximately what percent of the total number of employees in Company-C in the years 2007 and 2008 together?

(A) 210                    (B) 225                    (C)  220                  (D) 235              (5) 245

Solution:

[(15+30+45+25+50+45)/ (50+40)] = 210/90   = 21/9 = 235.

Explanation: Use Addition trick and Division trick to solve this sort of question in less time.

1.4) If 30% of the total number of employees in the year 2006 in all the companies together was female. What was the total number of employees in the same year in all the companies together?

(A) 9 thousand     (B) 4.9 lakhs        (C) 48000     (D) 4.8 lakhs    (E) None of these.

Sol:

Total Employees in 2006 = (30 + 15 + 25) =70

Female Employees = (70) × 3/10   = 21

Male Employees = 70 – 21 = 49 i.e. 49000

Ans: (E) None of these.

 Note: For better understanding, I have written steps but in the exam no need to write every step.

Bar Graph DI Questions SET – 2

2. Study the following graph carefully to Answer these Questions

bar graph data interpretation questions and answers

2.1) The total production by five companies in 1998 is what percent of the total production
by companies B & D in 1996?
(a) 100%
(b) 150%
(c) 95%
(d) 200%

Solution: Required Percentage = [(35 + 40 + 45 + 35 + 35 )/ (45 +50) ] * 100
= [190/95]*100
= 200%.

2.2) What is the ratio between average production by company B in 3 years to the average production by company C in three years?
(a) 6:7
(b) 8:7
(c) 7:8
(d) 7:6

Solution: Average production of B: Average production of C.
(45+ 35+ 40)/ 3 : (25 + 35 + 45)/3
40: 35.

2.3) For which of the following companies the rise or fall in the production of fertilizer from 1996 to 1997 was the maximum?
(a) A
(b) B
(c) C
(d) D.

We can answer this question by just observing the chart. (C).

2.4) What is the percent drop in production by company D from 1996 to 1998?
(a) 30%
(b) 43%
(c) 50%
(d) 35%

Solution: Required percentage: (50-35)/ 50 * 100 = 30%.

2.5) The average production for three years was the maximum for which of the following companies?
(a) D only
(b) E only
(c) B & D both
(d) D & E both.

Answer: For this question, No need to calculate the values. we can decide by visual observation.

Bar Graph DI Questions SET – 3

3. Study the given graph below and answer the questions given below the chart.

data interpretation bar graph questions and answers
3.1) What is the average number of children pursuing painting classes from all the states together?

(a) 19375
(b) 17395
(c) 19725
(d) 18385

Ans.: ( 15 + 12.5 + 32.5 + 17.5)/4 = 77.5 *1000/4 = 19375.
3.2) The children pursuing singing classes in state A is what percent of the total number of children pursuing all the three classes from the state?
(a) 30
(b) 35
(c) 40
(d) 45

Ans.: [Children in State A (singing) / Total Children in State A (all classes)]* 100 = 25/62.5 *100 = 40

3.3) What is the difference between the total number of children pursuing dancing and the total number of children pursuing painting from all states together?
(A) 20000
(b) 15000
(c) 10000
(d) 25000

Solution: 97.5 – 77.5 = 20 i.e 20 thousand.

3.4) What is the respective ratio of the number of children pursuing dancing from state B to the number of children pursuing dancing from state D?
(a) 7:9
(b) 11:9
(c) 11:7
(d) 9:11

Solution: 22.5 :27.5 = 9:11

3.5) What is the average number of children pursuing singing, dancing, and painting from state C?
(a) 28859
(b) 29167
(c) 29216
(d) 28765

Sol.: Average number of children State C = (30 +25+ 32.5)/3
= (87.5/3) * 1000
= 29167.

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Bar Graph DI Questions SET – 4

4. Study the following graph carefully and answer the questions given below it.

bar graph questions for practicing data interpretation

4.1) By what approximate percentage the export of coffee increased from 1996-97 to 1997-98?
(a) 205
(b) 185
(c) 195
(d) 190

[(525 – 180)/180 ] * 100
= 190%.

4.2) What is the ratio of the export of coffee in 1994-95 to that in 1996-97?
(a) 69: 85
(b) 23: 30
(c) 85: 69
(d) 30: 23

= 138: 180
=69:90
= 23:30

4.3) What was the percentage increase in the export of Tea in 1997-98 from that in 1993-94?
(a) 40
(b) 90
(c) 35
(d) 20

Percentage increase from previous year to this year = [(Initial – Final)/Initial]*100 = 40%
4.4) By what percent did the export of tea fall in 1994-95 from that in the previous duration?
(a) 1
(b) 2
(c) 4
(d) 3

Fall in export of Tea in 94-95 = [(150 – 147)/150] * 100 = 2%

4.5) What was the ratio between the export of coffee to tea in 1997 -98?
(a) 5:14
(b) 2:5
(c) 5:2
(d) 14:5

The ratio of coffee to tea in 92-98 = 525: 210
= 5: 2

Bar Graph DI Questions SET – 5

5. The following Bar-Chart gives the production of cycles by three different companies X, Y, and Z for different years. Study this chart to answer the questions that follow.

bar graph data Interpretation questions for bank examsX= Red, Y = green, Z= blue

5.1. Considering the production of each company separately in how many instances, is the percentage increase in the production of cycles over the previous year’s production greater than 20%?

(a) 4
(b) 6
(c) 5
(d) 7

5.2. The annual percentage increase in the total production of cycles from 1995 to 1999 was:
(A) 24.08%
(b) 23.12%
(c)22. 64%
(d) 24.02%
(e) None of these.

5.3. In 1996, 15% of the rural population and 8% of the urban population used cycles as their mode of transportation. If the total population in 1996 is 1.1 billion, then what is the rural population in million? Assume that one cycle is used by a single person.

(a) 600
(b) 0.6
(c) 0.5
(d) 500
(e) None of these.

5.4. If the ratio of average cost to the customer of each cycle of the companies X, Y and Z is 2:4:3, then what is the percentage increase in the total revenue of the cycles produced in the years 1997 to 1999. (Assume that the cost of the cycle remained the same.)

(a) 39.89%
(b) 40.53%
(c) 42.64%
(d)41.27%
(e) None of these.

5.5. Over the five years, the percentage increase in production was maximum for:
(a) X.
(b) Y
(c) Z
(d) It cannot be determined.
(e) None of these.

Bar Graph DI Questions SET – 6

6.Study the following graph carefully and answer the questions that follow:

The graph given below represents the number of users of two broadband services A and B across 5 cities P, Q, R, S, and T.

Bar Graph Data Interpretation Questions for Bank Exams - Practice SETs

6.1) What is the total number of users of brand B across all five cities together?
(a) 2700
(b) 3000
(c) 3100
(d) 2900
(e) 3200

Total number of users of broadband B across all five cities together = 600 +500 + 650+ 700 +550 = 3000.

6.2) The number of users of brand A in city T is what percent of the number of users of brand B in city Q?
(a) 150
(b) 110
(c) 140
(d) 160
(e) 120

The number of users of brand A in city T = 700
The number of users of brand B in city Q = 500
X% of 500 = 700
X = ( 700 * 100 )/500 = 140.

6.3) What is the average number of users of brand A across all five cities together?
(a) 560
(b) 570
(c) 580
(d) 590
(e) 550

Average number of users of brand A across all five cities = (500 + 550 + 600 + 550 +700)/5 = 580

6.4) What is the difference between the total number of users of brand A and B together in city R and the total number of users of brand A and B together in city P?
(a) 170
(b) 140
(c) 130
(d) 150
(e) 160

Total no. of users of brand A and B in city R = 1250
Total no. of users of brand A and B in city P = 1100
Difference = 1250 -1100 = 150

6.5) What is the respective ratio of the number of users of brand A in city P to the number of users of brand B in city S?
(a) 5:7
(b) 4:7
(c) 2:5
(d) 3:4
(e) 5:6

Required Ratio = 500 : 700

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Bar Graph DI Questions SET – 7

7. Study the given graph where the marks of graduate students have given in 3 subjects – Maths, Accounts & Statistics. With the analysis of this data, we have to answer the questions.
Data Interpretation practice problems

7.1) What is the respective ratio of A’s marks in maths to B’s marks in maths?

     Solution:   40: 65

                         => 8 : 13

7.2) What are the average marks obtained by D?                                                                                                                             (1) 38           (2) 43     (3) 50      (4) 50        (5) 54

Explanation: By seeing the chart itself we came to know the Avg. is between 40 & 45. Choose the right answer from the given options.

7.3) What is C’s overall approx? percentage?
(1) 56          (2) 63           (3) 70            (4) 75  
Note: Do it mentally and can choose the correct one by eliminating the wrong options.

7.4) What is the difference between the total marks obtained by A & total marks obtained by B?
(1) 5              (2) 2            (3) 18           (4) None of these.
Sol:   185 – 150 = 35

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