Discrete Random Variables (Further) Flashcards Preview

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Flashcards in Discrete Random Variables (Further) Deck (12):
1

DRV mean (x̲) (for experimental data)

∑ fx / ∑ f
∑ x f(rel)

2

DRV Relative Frequency

no. of events / no. of trials

3

DRV Variance (for experimental data)

σ^2 = ( ∑ f x^2 / ∑ f ) - x̲^2

4

DRV Standard Deviation

The root of the Varience

5

DRV E(X)

E(X) = ∑ px

6

DRV Var(X)

Var(X) = E(X^2) - E(X)^2

7

DRV E(X ± Y)

E(X ± Y) = E(X) ± E(Y)

8

DRV Var(X ± Y)

Var(X ± Y) = Var(X) + Var(Y)

9

DRV E(aX + b)

E(aX + b) = a E(X) + b

10

DRV Var(aX + b)

Var(aX + b) = a^2 Var(X)

11

DRV ∑ p

∑ p = 1

12

DRV E(g(x))

E(g(x)) = ∑ g(x) p