Probability Distributions Flashcards
1
Q
When would you use normal approximation for binomial distribution?
A
When both np and nq is greater than 5.
B( n, p ) ≈ N( np, npq )
2
Q
When would you use normal approximation for poisson distribution?
A
When λ is greater than 10.
Poi( λ ) ≈ N( λ, λ )
3
Q
What is the central limit theorem?
A
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X ≈ N( µ, σ^2 /n )
