Discrete Probability Distributions

Question 1

Probability distribution of a random variable

Answer 1

describes all the possible values and likelihoods that a random variable can take within a given range

Question 2

bivariate distributions

Answer 2

relationship between two random variables

Question 3

When to use the binomial distribution (4)

Answer 3

1. fixed # of trials 2. only 2 outcomes 3. prob. of success is the same in each trial 4. trials are independent

Question 4

When to use Poisson distribution (4)

Answer 4

1. probability is the same 2. occurrence of event is independent

Question 5

Poisson distribution if mu is less than 5

Answer 5

mean is very high or probability is very low

Question 6

discrete uniform probability distribution

Answer 6

a probability distribution for which each possible value of the random variable has the same probability

Question 7

expected value

Answer 7

a measure of the central location of a random variable

Question 8

variance

Answer 8

ways to measure the spread - or variability- of a sample or how far aways from the “norm” a result is

Question 9

empirical probability

Answer 9

probability of an event happening is determined by the relative frequency with which a similar event has occurred in the past

Question 10

binomial formula

Question 11

Poisson Probability Formula

Answer 11

Question 12

Combinations formula