Random Variable

It is a variable whose value is determined by the outcome of a random procedure.

• Random Variable

• Discrete

• Continuous

It is repeatedly done under similar condition.

• Sample Space

• Experiment

• Outcome

It is the result of the trial in an experiment.

• Sample Space

• Outcome

• Experiment

It is a random variable where the observed numerical value are the results of measuring and may take on any numbers contained within any numerical intervals.

• Continuous

• Discrete

• Probability

It is a random variable where the observed numerical value is produced by counting and assumes whole numbers only.

• Continuous

• Probability

• Discrete

Which of the following represents a discrete random variable?

• The weight in kilograms of randomly selected Senior High School students.

• The time it takes a student to finish answering the midterm exams.

• The number of patients who experience side effects after taking antibiotics.

Which of the following random variables is continuous

• The number of defective cellular phones in a box of 20.

• The time required to finish a certain job.

• The number of correct answers in 20-item multiple choice test.

They describe the amount of spread in a distribution.

• Mode

• Variance

• Standard Deviation

• Mean

It is the weighted average of the possible values that the random variable can take.

• Mode

• Variance

• Standard Deviation

• Mean

What can we generate if we take the squares of standard deviation?

• Variance

• Standard Deviation

• Mean

• Mode