Statistics 1

Descrição

Maths S1 Mind Map
luisnorth
Mapa Mental por luisnorth, atualizado more than 1 year ago
luisnorth
Criado por luisnorth quase 11 anos atrás
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Resumo de Recurso

Statistics 1
  1. Discrete Random Variables

    Anexos:

    1. Probability Distributions
      1. E(X) = μ

        Anotações:

        • Σxp multiply each value of x by its corresponding probability, then sum
        1. Var(X)

          Anotações:

          • Σx^2 * p - μ^2 Square each value of x, multiply by corresponding probablity, sum and subtract μ^2
        2. Geometric Distribution
          1. X~Geo(p)
            1. Keep going until a success
              1. P(X=x)

                Anotações:

                • P(X=x) = (1-p)^(x-1) * p x=1,2,3...
                1. E(X)

                  Anotações:

                  • E(X) = 1/p
                  1. P(X>x)

                    Anotações:

                    • P(X>x) is the same as (1-p)^x 
                  2. Binomial Distribution
                    1. X~B(n,p)

                      Anotações:

                      • n number of events, p probability of success
                      1. P(X=x)

                        Anotações:

                        • P(X=x)= nCx * p^x * (1-p)^(n-x) x+0,1,2... n
                        1. E(X)

                          Anotações:

                          • E(X) = np
                          1. Var(X)

                            Anotações:

                            • Var(X) = np(1-p)

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