Random Variable

A random variable that can take on a finite (or countable infinite) number of distinct values.

• Discrete

• Continuous

Discrete or Continuous. Speed of a car

• Discrete

• Continuous

Which of the following is a discrete random variable?

• The average amount of electricity consumed

• The amount of paint used in repainting a building

• The number of patients in a hospital

• The average weight of female athletes

If three coins are tossed, which is not a possible value of the random variable for the number of heads?

• 1

• 2

• 3

• 4

A set of possible values for a given random variable.

• Range Space

• Sample Space

• Random Variable

• Experiment

The Grade 11 SHS department has 15 faculty members. Let X be the number of full-time faculty. What are the possible values of X?

• X= 0,1,2,3,4,...,15

• X= 1,2,3,4,...,15

Which of the following does not belong to the group?

• number of vehicle on parking area

• distance between two cars

• number of Covid - 19 patients

• attendance in google classroom

What is the sample space suppose two coins are tossed?

• {HH,HT,TH,TT}

• {HH,TT}

• {H,T}

• {HHH,TTT, HHT, HTH, HTT, THH, THT,TTH}

Is this a probability distribution?

• No, the sum of p(x) does not equal 1.

• No, all p(x) are not between 0 and 1.

• Yes, all p(x) are not between 0 and 1.

• Yes, the sum p(x) is 1.

Find the mean of the probability distribution. Use your calculator.

• 2.21

• 2.45

• 1

• 1.49