Discrete and Continuous Random Variables

Identify whether the experiment involves a discrete or a continuous random variable.

Collecting data about the mileage per liter of a certain brand and model of a car

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

tossing a pair of fair coins

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Recording the number of points scored by a NBA team in each game of the 2018 season

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Number of phone calls answered by a call center agent during his/her shift

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Recording number of medals that the Philippine team won in each of the past 20 Olympic games

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Measuring the distance travelled by different cars using 1-liter of gasoline

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Measuring the length of time it takes before a dolphin surfaces in the ocean to breath

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Recording the number of times each student goes to the bathroom in each school day

• Discrete Random Variable

• Continuous Random Variable

Identify whether the experiment involves a discrete or a continuous random variable.

Tallying the number of times a student has been late during the 1st term

• Discrete Random Variable

• Continuous Random Variable

In a valid probability distribution, the probabilities must:

• Be between 0 and 1 AND

  Add to 1

• Be between 0 and 1 OR

  Add to 1

• Be between 0 and 1

• Add to 1