Data Interpretation Questions and Answers

Q: What is the average score for Company C across all four metrics?

Average Company C's four metrics.\[ 80 + 60 + 80 + 70 = 290 \]\[ \frac{290}{4} = 72.5 \]

Q: What is the average mark obtained by all the students in Geography?

Read the Geography column and average the six marks.\[ 88 + 92 + 70 + 65 + 85 + 74 = 474 \]\[ \frac{474}{6} = 79 \]

Q: Who is the top-ranking student based on total marks?

We need to calculate the total marks for each student.Ankit: 90+50+90+88+70 = 388Priya: 100+80+80+92+98 = 450Rahul: 90+60+70+70+80 = 370Suman: 80+65+80+65+75 = 365Sneha: 70+75+85+85+65 = 380Rohit: 65+55+95+74+70 = 359Priya has the highest total marks (450).

Q: The marks obtained by Suman in English is what percentage of the marks obtained by Priya in the same subject?

Suman scored 65 in English and Priya 80.\[ \frac{65}{80} \times 100 = 81.25\% \]Priya's mark is the base, since the question asks what Suman's was of hers.

Q: What is the overall percentage of marks obtained by Rahul?

Total marks obtained by Rahul = 90+60+70+70+80 = 370.The maximum marks for each subject is 100. For 5 subjects, the total maximum marks = 500.Overall Percentage = \(\frac{\text{Total Marks Obtained}}{\text{Total Maximum Marks}} \times 100\)= \(\frac{370}{500} \times 100 = 74\)%.

Important Instructions

Direction for [ Question No: 1 To 1 ] :

The following table shows the production of minerals for some years as given. Production (in thousand tonnes)

Year	Aluminium	Lead	Nickel	Copper	Mica	Zinc	Iron-ore
1990-91	200	48	226	222	56	94	1100
1991-92	248	112	232	310	68	98	1120
1992-93	306	160	238	298	60	108	1122
1993-94	364	126	248	288	76	96	1132
1994-95	410	188	246	314	84	114	1116
1995-96	560	208	278	328	100	112	1124
1996-97	620	234	368	372	92	120	1142

Which mineral had a continuous decrease in production over the given years from 1991-92 to 1993-94?

A.Lead
B.Copper
C.Nickel
D.Zinc

Exam Year(s)

DSSSB PGT - 2023,

Answer: B

Copper is the mineral whose production decreased continuously from 1991-92 to 1993-94. Its production was 310, 298 and 288 thousand tonnes in the three years, so it fell in each year.

Lead was 112, 160 and 126, so it rose in 1992-93 and then fell. Nickel was 232, 238 and 248, so it rose every year. Zinc was 98, 108 and 96, so it rose and then fell. A continuous decrease needs a fall at both steps, and only copper has that.

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Direction for [ Question No: 2 To 2 ] :

The number of candidates who appeared, qualified, and were chosen in a competitive examination from five districts of West Bengal, Nadia, Howrah, Burdwan, Hooghly and Bankura between the years of 2010 and 2014 are shown in the given table.

Year	Nadia			Howrah			Burdwan			Hooghly			Bankura
Year	App	Qual	Sel	App	Qual	Sel	App	Qual	Sel	App	Qual	Sel	App	Qual	Sel
2010	8000	850	94	7800	810	82	7500	720	78	8200	680	85	6400	700	75
2011	4800	500	48	7500	800	65	5600	620	85	6800	600	70	7100	650	75
2012	7500	640	82	7400	560	70	4800	400	48	6500	525	65	5200	350	55
2013	9500	850	90	8800	920	86	7000	650	70	7800	720	84	6400	540	60
2014	9000	800	70	7200	850	75	8500	950	80	5700	485	60	4500	600	75

In 2012, what was the approximate percentage of the total number of candidates selected to the total number of candidates qualified for all five districts?

A.13%
B.10%
C.8%
D.15%

Exam Year(s)

DSSSB PGT - 2023,

Answer: A

The answer is about 13 per cent. For 2012 add the candidates selected in the five districts: 82 + 70 + 48 + 65 + 55 = 320. Add those who qualified: 640 + 560 + 400 + 525 + 350 = 2475. The required percentage is \[\frac{320}{2475} \times 100 \approx 12.9\] which is about 13 per cent. The options 10, 8 and 15 per cent are further from 12.9. The table was read from the page image, where the 2014 Bankura appeared figure reads 4500.

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Direction for [ Question No: 3 To 3 ] :

Directions (Q19-Q20): Study the following graph carefully and answer the questions given below:

Total Number of Students Appeared and Qualified from Various Schools at a Scholarship Exam.

School	Appeared	Qualified
A	3250	2000
B	2000	1250
C	3000	2000
D	2500	1500
E	2750	2000

Find the difference between appeared and qualified number of students from school B.

A.650
B.750
C.850
D.950

Exam Year(s)

DSSSB - 2023,

Answer: B

The difference for school B is 750. From the data the number of students from school B who appeared is 2000 and the number who qualified is 1250. \[ 2000 - 1250 = 750 \] The values 650, 850 and 950 do not match the difference; 650 and 850 are close to it, but they are not the figures of the bars of school B.

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Direction for [ Question No: 4 To 5 ] :

The following radar chart shows the performance scores (out of 100) of three companies on four different metrics. Study the chart and answer the questions.

For which company is the area covered by the polygon on the chart the largest?

A.Company a
B.Company b
C.Company c
D.Cannot be determined

Answer: B

A larger area on a radar chart generally indicates higher values across the board. By visual inspection of the data points, Company B has the highest or second-highest values on most metrics (Sales: 90, Profit: 85, Market Share: 75, Customer Sat.: 90). Company A has lower values (e.g., Sales 70, Market Share 60) and Company C also has lower values in some areas (Profit 60, Customer Sat. 70). Therefore, Company B covers the largest area.

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What is the average score for Company C across all four metrics?

A.65
B.67.5
C.70
D.72.5

Answer: D

Average Company C's four metrics.

\[ 80 + 60 + 80 + 70 = 290 \]

\[ \frac{290}{4} = 72.5 \]

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Direction for [ Question No: 6 To 9 ] :

The following table gives the marks obtained by six students in five different subjects in an examination. The maximum marks for each subject is 100. Study the table and answer the questions that follow.

Student	History	English	Maths	Geography	Science
Ankit	90	50	90	88	70
Priya	100	80	80	92	98
Rahul	90	60	70	70	80
Suman	80	65	80	65	75
Sneha	70	75	85	85	65
Rohit	65	55	95	74	70

What is the average mark obtained by all the students in Geography?

A.75
B.77
C.79
D.81

Answer: C

Read the Geography column and average the six marks.

\[ 88 + 92 + 70 + 65 + 85 + 74 = 474 \]

\[ \frac{474}{6} = 79 \]

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Who is the top-ranking student based on total marks?

A.Ankit
B.Priya
C.Rahul
D.Sneha

Answer: B

We need to calculate the total marks for each student.

Ankit: 90+50+90+88+70 = 388
Priya: 100+80+80+92+98 = 450
Rahul: 90+60+70+70+80 = 370
Suman: 80+65+80+65+75 = 365
Sneha: 70+75+85+85+65 = 380
Rohit: 65+55+95+74+70 = 359

Priya has the highest total marks (450).

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The marks obtained by Suman in English is what percentage of the marks obtained by Priya in the same subject?

A.65%
B.75%
C.81.25%
D.85%

Answer: C

Suman scored 65 in English and Priya 80.

\[ \frac{65}{80} \times 100 = 81.25\% \]

Priya's mark is the base, since the question asks what Suman's was of hers.

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What is the overall percentage of marks obtained by Rahul?

A.70%
B.72%
C.74%
D.76%

Answer: C

Total marks obtained by Rahul = 90+60+70+70+80 = 370.

The maximum marks for each subject is 100. For 5 subjects, the total maximum marks = 500.

Overall Percentage = \(\frac{\text{Total Marks Obtained}}{\text{Total Maximum Marks}} \times 100\)

= \(\frac{370}{500} \times 100 = 74\)%.

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Direction for [ Question No: 10 To 10 ] :

The following data shows the distribution of employees in a company across different departments and the ratio of males to females in them. The total number of employees in the IT department is 990. Study the data and answer the questions.

Pie Chart: Employee Distribution by Department

Table: Male to Female Ratio

Department	Male : Female Ratio
HR	1:2
Accounts	4:5
Production	11:7
IT	5:4
Marketing	7:8

10.

What is the total number of employees in the company?

A.3600
B.4000
C.4200
D.4500

Answer: D

The question provides the number of employees in the IT department, which can be used to find the total.

Number of employees in IT = 990.

From the pie chart, the percentage of employees in IT = 22%.

Let T be the total number of employees.

22% of T = 990

0.22 * T = 990

T = 990 / 0.22 = 4500.

The total number of employees is 4500.

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Data Interpretation Questions and Answers

Important Instructions

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