NUST NET Quantitative Maths chapter 6: Quantitative · Statistics and data interpretation MCQs with answers

By Team Megalecture · Updated 13 Nov 2026

42 exam-style questions on Quantitative · Statistics and data interpretation, each with the answer and a short explanation. Ten of them are below to try. The chapter test draws ten fresh questions each time and is marked the moment you finish, with your score by topic.

42 questions · 2 topics · 10 per test

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What chapter 6 covers

Ten Quantitative · Statistics and data interpretation questions with answers

Try each one, then open the answer. These ten stay the same; the test draws new ones every time.

1. The average salary of 8 office staff is Rs 30,000. When a manager joins, the average rises to Rs 32,000. What is the manager's salary?

  1. A
    Rs 34,000
  2. B
    Rs 40,000
  3. C
    Rs 46,000
  4. D
    Rs 48,000
Show answer

Answer: D. New total = 9 × 32,000 = Rs 288,000 and the old total = 8 × 30,000 = Rs 240,000, so the manager earns Rs 48,000.

2. Five different positive whole numbers have a median of 10 and a mean of 12. What is the largest possible value of the biggest number?

  1. A
    36
  2. B
    38
  3. C
    40
  4. D
    47
Show answer

Answer: A. Total = 60. To make the biggest as large as possible, make the others as small as allowed: 1, 2, 10, 11. Then the biggest = 60 − 24 = 36. 47 forgets the fourth number must exceed 10.

3. A shop's daily sales (in thousand rupees) over 8 days were 14, 22, 17, 25, 19, 14, 23, 18. What is the median?

  1. A
    22
  2. B
    19
  3. C
    18.5
  4. D
    18
Show answer

Answer: C. In order: 14, 14, 17, 18, 19, 22, 23, 25. The median is (18 + 19)/2 = 18.5. 22 averages the middle two of the unsorted list (25 and 19).

4. The minimum temperatures (in °C) in a hill town over five days were −4, 3, −7, 6 and 2. What is the range?

  1. A
    1 °C
  2. B
    9 °C
  3. C
    10 °C
  4. D
    13 °C
Show answer

Answer: D. Range = highest − lowest = 6 − (−7) = 13 °C. 1 forgets that subtracting a negative adds.

5. The mean of 10 numbers was found to be 25, but one number, 34, had been copied as 43. What is the correct mean?

  1. A
    24.1
  2. B
    24.9
  3. C
    25
  4. D
    25.9
Show answer

Answer: A. The total was 250 but is 9 too high, so the correct total is 241 and the mean is 24.1. 25.9 adds the error instead of removing it.

6. A batsman has an average of 40 runs after 9 innings. How many runs must he score in his 10th innings to raise his average to 42?

  1. A
    42
  2. B
    44
  3. C
    50
  4. D
    60
Show answer

Answer: D. He needs 10 × 42 = 420 runs in total and has 9 × 40 = 360, so he needs 60. 42 forgets that every earlier innings must also be lifted by 2.

7. Five numbers have a mean of 10. The largest number, 18, is removed. What is the mean of the remaining four?

  1. A
    6.4
  2. B
    8
  3. C
    9
  4. D
    10
Show answer

Answer: B. Total = 50; without 18 it is 32, and 32 ÷ 4 = 8. 6.4 divides 32 by 5 instead of 4.

8. For the data 6, 9, 9, 11, 15, which statement is true?

  1. A
    Mean = 9 and median = 10
  2. B
    Mean = median = 10
  3. C
    Mean = 10 and median = 11
  4. D
    Mean = 10 and median = 9
Show answer

Answer: D. Sum = 50, so mean = 50 ÷ 5 = 10; the middle value in order is 9, so median = 9.

9. Find the mean of 12, 15, 18, 21 and 24.

  1. A
    45
  2. B
    24
  3. C
    22.5
  4. D
    18
Show answer

Answer: D. Sum = 90 and there are 5 values, so the mean = 90 ÷ 5 = 18. 22.5 divides by 4 instead of 5.

10. In a class, 20 boys have a mean score of 60 and 30 girls have a mean score of 70. What is the mean score of the whole class?

  1. A
    66
  2. B
    65
  3. C
    64
  4. D
    60
Show answer

Answer: A. Total = 20 × 60 + 30 × 70 = 1,200 + 2,100 = 3,300 for 50 students, so the mean = 66. 65 averages the two means without weighting; 64 swaps the group sizes.

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Ways to practise this chapter

Quantitative · Statistics and data interpretation: questions students ask

How many Quantitative · Statistics and data interpretation MCQs are there?

42, each with the answer and a short explanation, across 2 topics: Mean, median, mode and range, Data interpretation. Every chapter test draws ten of them, so you can take it many times.

Is the NUST NET Quantitative Maths chapter 6 test free?

Yes. The test, the answers and the explanations are free and need no sign-up. Sign in only if you want your scores kept across devices.

How is the chapter test marked?

The moment you press Finish: your score, the right answer and an explanation for every question, and the ones you got wrong saved in My mistakes to retry.

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