Discrete and Continuous Random Variable

A set of numerical values assigned to a sample space

• Random sample

• Random variable

• Random process

• Random experiment

Which of the following best describe variable that can be counted?

• Categorical

• Continuous

• Discrete

• Ordinal

Which of the following best describe variable that can be measured?

• Categorical

• Continuous

• Discrete

• Ordinal

The drawer has 2 red ties, 3 black ties and 5 blue ties. A tie is picked at random. What is the total number of possible outcomes?

• 2

• 3

• 5

• 10

Which of the following statement describe a continuous random variable?

• The number of students present in a class

• The average distance traveled by a jeep in a week

• The number of correct guesses on a multiple choice test

• The number of women taller than 68 inches in a random sample of 5 Women.

Which of the following is discrete random variable?

• Hipolito weighs 65 kg

• Hipolito is 160 cm tall

• Hipolito has two brothers

• Hipolito ran 100 meters in 10.2 seconds

Which of the following statement DOES NOT describe a discrete random variable?

• The number of children who do household chores everyday

• The average amount of milk consumption of a baby each day

• The number of students who excelled in mathematics in a certain grade level

• The number of children who love to pray a rosary every 6 o’clock in the afternoon

Which of the following statement DOES NOT describe a continuous random variable?

• The distance traveled by a truck in an hour

• The average height of a coconut tree each day

• The number of provinces belong to Region IV-A

• The intensity of an earthquake that happens last month

You decided to conduct a survey of families with two children. You are interested in counting the number of girls (out of 2 children) in each family. Is this a random variable?

• yes, it is a random variable

• No, it is not a random variable

• Maybe

• Cannot be determine

Which of the following is NOT a continuous variable?

• the amount of water in a jug

• the length of time attending a webinar

• The height of the tallest hill in Teresa, Rizal

• The number of OFW who travelled abroad each day