Kemp and Kemp types
Minor modifications in the definition of three of the types have been made to avoid numerical difficulties. Note, J denotes a nonnegative integer.
[Classic] |
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\(0<a, 0<N, 0<k\) |
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integers: a, N, k. |
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\(max(0,a+k-N) \le x \le min(a,k)\) |
[IA(i)] (Real classic) |
at least one noninteger parameter |
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\(0<a, 0<N, 0<k, k-1<a<N-(k-1)\) |
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integer: k |
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\( 0 \le x \le a\) |
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[IA(ii)] (Real classic)
at least one noninteger parameter |
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\(0<a, 0<N, 0<k, a-1<k<N-(a-1)\) |
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integer: a |
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\(0 \le x \le a\) |
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Interchanging a and k transforms this to type IA(i) |
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[IB]
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\(0<a, 0<N, 0<k, a+k-1<N, J < (a,k) < J+1\) |
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integer: \(0 \le J\) |
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non-integer: a, k |
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\(0 <= x \dots \) |
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NOTE: Kemp and Kemp specify \(-1<N\). |
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No practical applications for this distribution. |
[IIA] (negative hypergeometric) |
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\(a<0, N<a-1,0<k\) |
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integer: k |
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\(0 \le x \le k\) |
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NOTE: Kemp and Kemp specify \(N<a, N \ne a-1\) |
[IIB] |
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\(a<0, -1<N<k+a-1, 0<k, J < (k,k+a-1-N) < J+1\) |
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non-integer: k |
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integer: \(0 \le J\) |
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\(0 \le x ....\) |
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This is a very strange distribution. Special calculations were used. |
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Note: No practical applications. |
[IIIA] (negative hypergeometric) |
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\(0<a,N<k-1,k<0\) |
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integer: a |
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\(0 \le x \le a\) |
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Interchanging a and k transforms this to type IIA |
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NOTE: Kemp and Kemp specify \(N<k, N \ne k-1\) |
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[IIIB]
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\(0<a,-1<N<a+k-1,k<0, J<(a,a+k-1-N)<J+1\) |
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non integer: a |
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integer: \(0 \le J\) |
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\(0 \le x \dots \) |
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Interchanging a and k transforms this to type IIB |
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Note: No practical applications |
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[IV] (Generalized Waring)
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\(a<0,-1<N, k<0\) |