April 8 B2: BW: Intro to Discrete Probability Distributions

Front

What is a discrete probability distribution?

Back

A discrete probability distribution is a statistical distribution that describes the likelihood of outcomes for a discrete random variable, where the outcomes are countable.

Front

Are discrete values countable?

Back

True

Front

What is a discrete random variable?

Back

A discrete random variable is a variable that can take on a countable number of distinct values, such as the number of students in a class.

Front

Give an example of a discrete random variable.

Back

The number of cars in a parking lot.

Front

What is a continuous random variable?

Back

A continuous random variable is a variable that can take on an infinite number of values within a given range, such as height or weight.

Front

What is the requirement for the sum of probabilities in a discrete probability distribution?

Back

The sum of all probabilities must equal 1.

Front

What does it mean if a probability is between 0 and 1?

Back

It means that the event is possible, with 0 indicating impossibility and 1 indicating certainty.

Front

What is NOT a requirement of a discrete probability distribution?

Back

The sum of the values for the random variable x must add up to 1.

Front

What is the range of values for individual probabilities in a discrete probability distribution?

Back

Each individual probability must be between 0 and 1 inclusively.

Front

How do you determine if a variable is discrete or continuous?

Back

If the variable can take on countable values, it is discrete; if it can take on any value within a range, it is continuous.