Statistics and Probability Challenge

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

• 5.2

• 4.5

• 6.0

• 7.2

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

• 1/2

• 2/5

• 3/6

• 1/3

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

• 0.3

• 0.5

• 0.6

• 0.4

Calculate the median of the following numbers: 12, 15, 11, 10, 14.

• 14

• 15

• 11

• 12

What is the mode of the data set: 2, 3, 3, 5, 7, 8, 8, 8, 9?

• 8

• 5

• 3

• 9

If the probability of an event occurring is 0.25, what is the probability of it not occurring?

• 0.75

• 1.00

• 0.10

• 0.50

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

• 2/5

• 1/2

• 3/8

• 5/8

What is the range of the following data set: 10, 20, 30, 40, 50?

• 40

• 10

• 30

• 20

If two coins are flipped, what is the probability of getting at least one head?

• 3/4

• 1/4

• 1/2

• 2/3

What is the standard deviation of the data set: 2, 4, 4, 4, 5, 5, 7, 9?

• 2

• 3

• 1

• 5