Statistics & Probability Quiz

Question 1

What is the mean of 4, 8, 6, 10, 2?

Accepted Answer

6

Answer

5

Answer

8

Answer

10

Question 2

What is the median of 3, 7, 1, 9, 5?

Accepted Answer

5

Answer

3

Answer

7

Answer

9

Question 3

What is the mode of 2, 4, 4, 6, 8, 4, 9?

Accepted Answer

4

Answer

2

Answer

6

Answer

9

Question 4

What is the range of 15, 3, 22, 8, 17?

Accepted Answer

19

Answer

14

Answer

17

Answer

22

Question 5

A bag has 3 red and 7 blue balls. What is the probability of picking red?

Accepted Answer

3/10

Answer

3/7

Answer

7/10

Answer

1/3

Question 6

What is the probability of rolling a 6 on a fair dice?

Accepted Answer

1/6

Answer

1/3

Answer

1/4

Answer

1/5

Question 7

What is the mean of 10, 20, 30?

Accepted Answer

20

Answer

15

Answer

25

Answer

30

Question 8

If P(event) = 0.4, what is the probability it does NOT happen?

Accepted Answer

0.6

Answer

0.4

Answer

0.5

Answer

1.4

Question 9

What is the median of 2, 4, 6, 8?

Accepted Answer

5

Answer

4

Answer

6

Answer

7

Question 10

A coin is flipped. What is the probability of getting tails?

Accepted Answer

1/2

Answer

0

Answer

1/4

Answer

1

Question 11

What is the range of 5, 5, 5, 5?

Accepted Answer

0

Answer

1

Answer

5

Answer

20

Question 12

The ages of 5 children are 8, 9, 7, 10, 6. What is the mean age?

Accepted Answer

8

Answer

7

Answer

9

Answer

10

Question 13

Which measure is most affected by outliers (extreme values)?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 14

What is the probability of rolling an even number on a fair dice?

Accepted Answer

1/2

Answer

1/6

Answer

1/3

Answer

2/3

Question 15

A dataset is: 5, 5, 5. What is true?

Accepted Answer

Mean = Median = Mode

Answer

Mean only equals Mode

Answer

All three are different

Answer

Mode doesn't exist

Question 16

What is the mode of 1, 2, 3, 4, 5?

Accepted Answer

No mode

Answer

1

Answer

3

Answer

5

Question 17

There are 5 red, 3 blue, and 2 green sweets. What is P(green)?

Accepted Answer

2/10

Answer

1/5

Answer

1/10

Answer

3/10

Question 18

What does a probability of 0 mean?

Accepted Answer

Impossible

Answer

Very unlikely

Answer

Unlikely

Answer

Certain

Question 19

The test scores of 6 students: 70, 85, 90, 60, 75, 80. What is the mean?

Accepted Answer

76.67

Answer

75

Answer

80

Answer

82.5

Question 20

What is the median of 11, 14, 17, 20, 23, 26?

Accepted Answer

18.5

Answer

17

Answer

18

Answer

20