Understanding Random Variables

Which of the following scenarios represents a discrete random variable?

• The number of books borrowed from a library in a week

• The speed of a tricycle on a busy street

• The amount of water a household consumes daily

• The height of coconut trees in a plantation

A teacher records the number of absences per student in a semester. This data is an example of:

• A discrete random variable

• A continuous random variable

• A qualitative variable

• A nominal variable

If the temperature in Baguio City is measured in degrees Celsius daily, this data is considered:

• A discrete variable

• A continuous variable

• A nominal variable

• A categorical variable

Which of the following is an example of a continuous random variable?

• The number of students enrolled in a university

• The total amount of rainfall in Metro Manila for a month

• The number of jeepneys passing by a certain checkpoint

• The number of customers at a carinderia per day

Which of the following is NOT a discrete variable?

• Number of books per student

• Number of green marbles in the box

• The number of arrivals of customers in the clinic between 8:00 a.m to 4:00 p.m.

• The weight of a box of soft drinks labeled 12 ounces.

Which of the following scenarios describe a continuous variable?

• The weight of newly harvested palay per sack

• The total height of students in a classroom

• The number of pets owned by a household

• The amount of milk consumed by a toddler per day

A coconut farmer monitors the amount of copra produced in kilograms per harvest. The amount of copra is an example of:

• Discrete

• Continuous

• Categorical

• Ordinal

Which of the following statements is true about discrete variables?

• They can only take whole number values

• They can take any value within a given range

• They always represent measurements

• They cannot be counted

In a study about birth rates in a certain province, the data collected is the number of babies born per year. This type of data is:

• Continuous

• Discrete

• Nominal

• Ordinal

The number of buses arriving at a terminal every hour is classified as:

• Discrete

• Continuous

• Qualitative

• Nominal