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Topic: Mode of InverseChiSquareDistribution
Replies: 3   Last Post: Nov 14, 2012 3:21 PM

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paulvonhippel at yahoo

Posts: 72
Registered: 7/13/05
Re: Mode of InverseChiSquareDistribution
Posted: Nov 14, 2012 3:21 PM
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Thank you. Why doesn't the ArgMax function find the mode?


From: Bob Hanlon <>
To: paul <>
Mode of InverseChiSquareDistribution

D is a reserved word and cannot be used for a variable name. The mode
is the value of x for which the derivative of the PDF is zero.

dist = InverseChiSquareDistribution[d - 1];

mode = x /. Solve[
D[PDF[dist, x], x] == 0,
x > 0],

1/(1 + d)

Bob Hanlon

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