1
A shop sold the following numbers of phones: January 120, February 150, March 180, April 150. What is the total?
Correct answer: D. 600
Add all the values: 120 + 150 + 180 + 150 = 600 phones.
easy
Data Interpretation Basics MCQs
Solved data interpretation MCQs for banking prelims: totals, averages, percentage change and ratios from small data sets, with worked solutions.
20 MCQsUpdated 27 October 2026
Data interpretation questions give a small table of figures, such as sales, students, production or accounts opened, and ask for totals, averages, percentages and ratios.
Read the units and the years carefully before calculating, and round only at the end. Many DI options are close, so an approximate answer is often not enough.
- 2
A shop sold the following numbers of phones: January 120, February 150, March 180, April 150. What is the average per month?
Correct answer: A. 150
Average = total ÷ number of entries = 600 ÷ 4 = 150.
easy - 3
A shop sold the following numbers of phones: January 120, February 150, March 180, April 150. By what percentage did the figure change from January to February?
Correct answer: D. 25% increase
Change = 150 − 120 = 30, which is 30 ÷ 120 × 100 = 25% of the starting value (an increase).
medium - 4
A shop sold the following numbers of phones: January 120, February 150, March 180, April 150. What is the ratio of the highest figure to the lowest?
Correct answer: C. 3 : 2
Highest = 180 (March), lowest = 120 (January). 180 : 120 simplifies to 3 : 2.
medium - 5
A school had these numbers of students in Classes 6 to 10: Class 6 45, Class 7 50, Class 8 40, Class 9 60, Class 10 55. What is the total?
Correct answer: A. 250
Add all the values: 45 + 50 + 40 + 60 + 55 = 250 students.
easy - 6
A school had these numbers of students in Classes 6 to 10: Class 6 45, Class 7 50, Class 8 40, Class 9 60, Class 10 55. What is the average per class?
Correct answer: A. 50
Average = total ÷ number of entries = 250 ÷ 5 = 50.
easy - 7
A school had these numbers of students in Classes 6 to 10: Class 6 45, Class 7 50, Class 8 40, Class 9 60, Class 10 55. By what percentage did the figure change from Class 6 to Class 7?
Correct answer: C. 11.11% increase
Change = 50 − 45 = 5, which is 5 ÷ 45 × 100 = 11.11% of the starting value (an increase).
medium - 8
A school had these numbers of students in Classes 6 to 10: Class 6 45, Class 7 50, Class 8 40, Class 9 60, Class 10 55. What is the ratio of the highest figure to the lowest?
Correct answer: D. 3 : 2
Highest = 60 (Class 9), lowest = 40 (Class 8). 60 : 40 simplifies to 3 : 2.
medium - 9
A factory produced these numbers of cars (in thousands) each year: 2019 40, 2020 32, 2021 48, 2022 60. What is the total?
Correct answer: D. 180
Add all the values: 40 + 32 + 48 + 60 = 180 thousand cars.
easy - 10
A factory produced these numbers of cars (in thousands) each year: 2019 40, 2020 32, 2021 48, 2022 60. What is the average per year?
Correct answer: A. 45
Average = total ÷ number of entries = 180 ÷ 4 = 45.
easy - 11
A factory produced these numbers of cars (in thousands) each year: 2019 40, 2020 32, 2021 48, 2022 60. By what percentage did the figure change from 2019 to 2020?
Correct answer: B. 20% decrease
Change = 32 − 40 = -8, which is −8 ÷ 40 × 100 = −20% of the starting value (a decrease).
medium - 12
A factory produced these numbers of cars (in thousands) each year: 2019 40, 2020 32, 2021 48, 2022 60. What is the ratio of the highest figure to the lowest?
Correct answer: A. 15 : 8
Highest = 60 (2022), lowest = 32 (2020). 60 : 32 simplifies to 15 : 8.
medium - 13
A bank opened these numbers of new accounts in four branches: Branch P 240, Branch Q 360, Branch R 300, Branch S 180. What is the total?
Correct answer: C. 1,080
Add all the values: 240 + 360 + 300 + 180 = 1080 accounts.
easy - 14
A bank opened these numbers of new accounts in four branches: Branch P 240, Branch Q 360, Branch R 300, Branch S 180. What is the average per branch?
Correct answer: C. 270
Average = total ÷ number of entries = 1080 ÷ 4 = 270.
easy - 15
A bank opened these numbers of new accounts in four branches: Branch P 240, Branch Q 360, Branch R 300, Branch S 180. By what percentage did the figure change from Branch P to Branch Q?
Correct answer: D. 50% increase
Change = 360 − 240 = 120, which is 120 ÷ 240 × 100 = 50% of the starting value (an increase).
medium - 16
A bank opened these numbers of new accounts in four branches: Branch P 240, Branch Q 360, Branch R 300, Branch S 180. What is the ratio of the highest figure to the lowest?
Correct answer: B. 2 : 1
Highest = 360 (Branch Q), lowest = 180 (Branch S). 360 : 180 simplifies to 2 : 1.
medium - 17
A farmer's wheat output (in quintals) over four seasons was: Season 1 80, Season 2 100, Season 3 90, Season 4 130. What is the total?
Correct answer: D. 400
Add all the values: 80 + 100 + 90 + 130 = 400 quintals.
easy - 18
A farmer's wheat output (in quintals) over four seasons was: Season 1 80, Season 2 100, Season 3 90, Season 4 130. What is the average per season?
Correct answer: C. 100
Average = total ÷ number of entries = 400 ÷ 4 = 100.
easy - 19
A farmer's wheat output (in quintals) over four seasons was: Season 1 80, Season 2 100, Season 3 90, Season 4 130. By what percentage did the figure change from Season 1 to Season 2?
Correct answer: D. 25% increase
Change = 100 − 80 = 20, which is 20 ÷ 80 × 100 = 25% of the starting value (an increase).
medium - 20
A farmer's wheat output (in quintals) over four seasons was: Season 1 80, Season 2 100, Season 3 90, Season 4 130. What is the ratio of the highest figure to the lowest?
Correct answer: A. 13 : 8
Highest = 130 (Season 4), lowest = 80 (Season 1). 130 : 80 simplifies to 13 : 8.
medium