STATISTICS - Statistical distributions

Question 1

What are the 4 necessary criterion to model the variable X with a binomial distribution?

Answer 1

• There are a fixed number of trials, n
• There are two possible outcomes (success and failure)
• There is a fixed probability of success, p
• The trials are independent of each other

Question 2

What is the formula for binomial distribution?

Answer 2

X ~ B (n,p)

Question 3

What do the symbols mean in the binomial distribution formula?

Answer 3

X -> The random variable X
~ -> is distributed
B -> binomial
n -> number of trials
p -> probability of success