Random Variables Flashcard

Front

One property of the probability distribution states that the sum of the probabilities of all random variables must be equal to ___?

Back

1

Front

What is the variance of the distribution?

Back

9.05

Front

What is the mean of the probability distribution?

Back

5.18

Front

Define a Random Variable.

Back

A variable whose values are determined by chance.

Front

How do you calculate the mean of a probability distribution?

Back

Sum of all values multiplied by their probabilities.

Front

What is a Discrete Variable?

Back

A variable that can take on a countable number of values.

Front

What is a Continuous Variable?

Back

A variable that can take on an infinite number of values within a given range.

Front

What does the term 'Probability Distribution' refer to?

Back

A function that describes the likelihood of obtaining the possible values that a random variable can take.

Front

What is the formula for variance?

Back

Variance = E(X^2) - (E(X))^2, where E is the expected value.

Front

What is the expected value of a random variable?

Back

The long-term average value of repetitions of the experiment it represents.