Lf the mean is - and the variance is -2 in a Poisson distribution- then

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Standard XII

Mathematics

Standard Deviation about Mean for Continuous Frequency Distributions

lf the mean i...

Question

lf the mean is $λ$ and the variance is $σ^{2}$ in a Poisson distribution, then

λ = \frac{1}{2} σ^{2}

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σ^{2} = \frac{1}{2} λ

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λ = σ^{2}

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σ^{2} = λ^{2}

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Solution

The correct option is A $λ = σ^{2}$
For a Poisson distribution, mean and variance are equal .
i.e. $λ = σ^{2}$

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lf the mean is λ and the variance is σ2 in a Poisson distribution, then

The correct option is A λ=σ2For a Poisson distribution, mean and variance are equal .i.e.λ=σ2

lf the mean is $λ$ and the variance is $σ^{2}$ in a Poisson distribution, then

The correct option is A $λ = σ^{2}$
For a Poisson distribution, mean and variance are equal .
i.e. $λ = σ^{2}$