Discrete and Continuous Random Variables

What is the numerical quantity assigned to the outcome of an experiment usually denoted by an uppercase letter such as X?

• Frequency

• Probability

• Random variable

• Sample

Determine which of the following distribution is NOT a probability distribution.

• A

• B

• C

• D

What are the random variables in the given problem.

• x = 1, 2, 3

• x = 0, 1, 2, 3

• x = 2, 3, 4, 5, 6

• x = 0, 2, 4, 6, 8

What is the probability distribution of getting a sum of 2?

• 0.0625

• 0.6250

• 0.125

• 0.375

What is the probability distribution of getting a sum of 3

• 0.0625

• 0.250

• 0.125

• 0.750

What is the probability distribution of getting a sum of 4

• 0.625

• 0.3125

• 0.375

• 0.850

What is the probability distribution of getting a sum of 6

• 0.50

• 0.75

• 0.125

• 0.25

The probability distribution for the random variable x is shown in the table

• 
• 
• 
• 

What is the probability distribution of getting a sum of 5

• 0.50

• 0.75

• 0.125

• 0.25

Discrete or continuous data?

• Discrete

• Continuous