10 Question MCQ (including Assertion)

Question 1 of 10

The values 2, 3, 3, 4, 4, 4, 5 and \(x\) have mean 4. What is \(x\)?

A 4 B 7 C 5 D 9

Select one option. Answers are shown after the test.

Question 2 of 10

The masses 2.5, 3.1, 3.4, 3.7 and 4.3 kg have what mean?

A 3.1 kg B 3.5 kg C 17 kg D 3.4 kg

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Question 3 of 10

A library recorded loans in three sections. Year 1: Fiction 40, Science 25, History 20. Year 2: Fiction 46, Science 35, History 18. Which section had the greatest increase?

A Science, by 10 loans. B Fiction, by 46 loans. C History, by 2 loans. D Fiction and Science, equally.

Select one option. Answers are shown after the test.

Question 4 of 10

Assertion (A): The median of 1, 4, 6, 9 and 20 is 6.
Reason (R): The mean of 2, 4 and 9 is 5.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 5 of 10

Assertion (A): A rise from 30 registrations to 45 registrations is a 50% increase.
Reason (R): The median of 2, 3, 7 and 20 is 5.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 6 of 10

The ordered data are 4, 6, 8, 9 and 11. After 100 is added as a sixth value, what is the median?

A 8 B 9 C 8.5 D 23

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Question 7 of 10

Dataset A is 6, 8, 10, 12, 14 and dataset B is 9, 9, 10, 11, 11. Which comparison is correct?

A A has the larger mean and smaller range. B B has the larger mean and larger range. C Both means are 10, but A has the larger range. D Both have mean 10 and range 8.

Select one option. Answers are shown after the test.

Question 8 of 10

Assertion (A): The mean of 4, 7 and 13 lies between 4 and 13.
Reason (R): A mean is always equal to one of the observations.

A Both A and R are true, and R is the correct explanation of A. B Both A and R are true, but R is not the correct explanation of A. C A is true, but R is false. D A is false, but R is true.

Select one option. Answers are shown after the test.

Question 9 of 10

Six measurements have mean 24. By how much must their total increase for the mean to become 26?

A 2 B 6 C 12 D 156

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Question 10 of 10

Which five-value dataset has minimum 4, maximum 18, mean 10 and median 9?

A 4, 8, 9, 11, 18 B 4, 7, 10, 11, 18 C 4, 8, 9, 10, 18 D 4, 8, 9, 10, 19

Select one option. Answers are shown after the test.

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10 Question MCQ (including Assertion)