Histogram Discrete Probability Distribution

Given the probability histogram. Compute the actual standard deviation.

• 1.0897

• 1.0972

• 1.0879

• 1.0927

State whether it is Discrete or Continuous;

The sum rolled on a pair of dice

• Discrete

• Continuous

The number of heads when tossing a coin 50 times

• Discrete

• Continuous

Which of the following is a graphical display of data using bars of no spaces in between and group numbers into ranges?

• Bar Graph

• Histogram

• Line Graph

• Pie Chart

What is the sum of the probabilities of all values of the random variable?

• 0

• 1

• 2

• 3

Which of the following refers to a rule that assigns a numerical value or characteristic to an outcome of an experiment?

• Expected Value

• Random Variable

• Range Space

• Probability Distribution

Is this a probability distribution?

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

• Yes, all p(x) are between 0 and 1.

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

• Yes, the sum p(x) is 1.

Which of the following is a discrete random variable?

• The height of the building.

• The time to finish answering a test.

• The number of times you visit the social media in a day.

• The weight of the students.

The probability ____________ of a random variable gives its possible values and their probabilities.

A ____________ random variable X takes a fixed set of possible values with gaps between them

• continuous

• discrete

• independent

• dependent