Statistics and Probability Challenge

What is the mean of the following data set: 4, 8, 6, 5, 3?

• 7.2

• 6.0

• 5.2

• 4.5

If a die is rolled, what is the probability of rolling an even number?

• 2/3

• 1/3

• 1/4

• 1/2

In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy?

• 0.4

• 0.6

• 0.3

• 0.5

What is the median of the following numbers: 12, 15, 11, 10, 14?

• 15

• 14

• 12

• 11

If a coin is flipped three times, what is the probability of getting exactly two heads?

• 0.375

• 0.5

• 0.25

• 0.625

A bag contains 5 red balls and 3 blue balls. What is the probability of drawing a red ball?

• 2/5

• 5/8

• 1/2

• 3/8

What is the mode of the following data set: 2, 3, 4, 4, 5, 6, 6, 6, 7?

• 4

• 7

• 5

• 6

If the probability of an event occurring is 0.2, what is the probability of it not occurring?

• 0.8

• 0.1

• 0.5

• 1.0

In a survey, 70% of people prefer tea over coffee. If 100 people are surveyed, how many would you expect to prefer tea?

• 70

• 90

• 50

• 30

What is the range of the following data set: 7, 2, 9, 4, 5?

• 5

• 6

• 7

• 8