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statsmodels.genmod.families.links.inverse_squared.deriv2¶

inverse_squared.deriv2(p)¶

Second derivative of the power transform

Parameters:

p : array_like

Mean parameters

Returns:

g’’(p) : ndarray

Second derivative of the power transform of p

Notes

g’’(p) = power * (power - 1) * p`**(`power - 2)

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