Data Interpretation Quiz
Practice quiz on Data Interpretation (Quantitative Aptitude). 10 exam-style questions with explanations.
About This Quiz
Data Interpretation Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.The average of 12, 18, 24 and 30 is
- A.24
- B.18
- C.20
- D.21
Show answer
Answer: D. 21
Sum 84 / 4 = 21.
Q2.If sales rose from 200 to 250, the percentage increase is
- A.25%
- B.50%
- C.15%
- D.20%
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Answer: A. 25%
50/200 = 25%.
Q3.In a pie chart, a sector of 90 degrees represents what percentage?
- A.50%
- B.25%
- C.10%
- D.30%
Show answer
Answer: B. 25%
90/360 = 25%.
Q4.If a pie chart sector shows 20% of 360 degrees, its angle is
- A.72 degrees
- B.60 degrees
- C.90 degrees
- D.36 degrees
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Answer: A. 72 degrees
0.2 x 360 = 72.
Q5.Out of 400 students, 35% passed. The number of students who passed is
- A.120
- B.160
- C.180
- D.140
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Answer: D. 140
0.35 x 400 = 140.
Q6.Production increased from 80 to 100 units. The ratio of new to old is
- A.3 : 4
- B.4 : 5
- C.6 : 5
- D.5 : 4
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Answer: D. 5 : 4
100 : 80 = 5 : 4.
Q7.If a bar chart shows 40, 50, 60, the average value is
- A.60
- B.50
- C.45
- D.55
Show answer
Answer: B. 50
150/3 = 50.
Q8.The median of 3, 5, 7, 9, 11 is
- A.7
- B.5
- C.9
- D.6
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Answer: A. 7
The middle value is 7.
Q9.A table shows sales 120, 150, 180. The total is
- A.400
- B.450
- C.420
- D.480
Show answer
Answer: B. 450
120+150+180 = 450.
Q10.The mode of 2, 3, 3, 4, 5, 3, 6 is
- A.4
- B.2
- C.5
- D.3
Show answer
Answer: D. 3
3 occurs most often.
Frequently Asked Questions
Is Data Interpretation Quiz free to attempt on AajExam?
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How long does it take to complete Data Interpretation Quiz?
Data Interpretation Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Data Interpretation Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Data Interpretation Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Data Interpretation questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.