Flashcards
Statistics - Discrete Random Variables
Cards in this deck (3)
- 1Discrete Random VariablesP (x=r) = 2kr where r = 1, 2, 3, 4
4
show k = 1/20 using ∑ p(x=r) = 1
1 - 2Methodp(x=r) = 20k=1 = k= 1/20
E(x) = 3
Var(x) = 1 - 3EquationsE(x) = ∑rp(x=r)
Var(x) = ∑r^2p(x=r) – E(x)^2
Standard Deviation = √Var(x)
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- A-Level Maths (S1) Flashcards on Statistics - Discrete Random Variables, created by Liv Coote on 22/03/2016.
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- Liv Coote
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