Common Probability Functions

Common Probability Functions - Summary of Common...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Summary of Common Probability Distributions DISCRETE VARIABLES Binomial P(x) = n! x! n x ( ) ! p x (1 p) n x x = number of succeses p = probability of success n = number of independent trials μ x = n × p σ x 2 = n × p × (1 p) Geometric P(x) = p × (1 p) x 1 = probability of a success on the xth independent trial p = probability of success μ x = 1 p = "return period" σ x 2 = 1 p p 2 Negative Binomial P(x,r) = x 1 r 1 p r (1 p) x r = probability of taking x trials to get r successes p = probability of success μ x = r p σ x 2 = r(1 p) p 2
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Poisson P(x) = e −λ λ x x! = probability of x successes as n → ∞ μ x = λ = np = ν t = expected number of successes in time t ν = frequency of successes σ x 2 = λ Hypergeometric P(x) = R x N R n x N n N = total number of items in population R = number of items in the population with a certain characteristic = pN p = probability of having the characteristic n =
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern