Statistics and Probability

What is the mean of the population?

• 1.00

• 2.00

• 3.00

• 4.00

Compute the variance of the population.

• 5

• 10

• 15

• 20

Determine the possible samples of size n = 3

Use the formula NCn .

Given: N = 5; n = 3

• 4

• 6

• 8

• 10

Find the probability of rolling greater than a 1 on a single die.

• 6/6
• 5/6
• 4/6
• 1/6

What is the chance that you will spin a 6 twice in a row?

• 1/12

• 1/3

• 1/6

• 1/9

What is the mean of the following data set?

{5, 9, 5, 2, 7, 10}

• 10.2

• 6.30

• 8.2

• 5.3

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10
• 3/9
• 1/9
• 1/3

What does "mean" mean?

• average
• middle
• repeats the most
• variation

It is the set of all possible outcomes in an experiment.

• Random Variable

• Sample Space

• Mean

• Data

Example for random experiment

• Tossing a coin

• Rolling a die

• Selecting card from a pack of 52 cards

• All the above