Summative Test (Unit)

It is a numerical quantity that is assigned to the outcome of an experiment.

• Statistics

• Random Variable

• Probability

• Distribution

Variables that are expressed as a whole and is countable.

• Continuous

• Discrete

• Nominal

• Ordinal

Which of the following is a discrete random variable?

• The amount of paint used in repainting a building

• 
  The average amount of electricity consumed

• 
  The average weight of female athletes

• The number of patients in a hospital

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

• Data

• Mean

• Random Variable

• Sample Space

Probability can be between what two numbers?

• 10 and 20

• 0 and 100

• 0 and 10

• 0 and 1

Find the probability of rolling greater than a 3 on a single die.

• 5/6

• 4/6

• 3/6

• 2/6

Supposed two coins are tossed consecutively and we are interested in the number of heads that will come out. Determine the values of the random variable H (number of heads).

• 0, 1, 2

• 0, 1, 2, 3

• 1, 2

• 1, 2, 3

A coin is tossed three times. How many total outcomes are possible?

• 4

• 6

• 8

• 16

A couple has four children, let X be the number of boy. What are the possible random variable of X?

• X = {boy, girl}

• X = {0, 1, 2, 3}

• X = {0, 1, 2, 3, 4}

• X = {1, 2, 3, 4}

Which of the following random variable is continuous?

• speed of bus

• number of female students

• number defective mobile phone

• Choosing a natural number less than 100