The exact expression for the convolution of gamma distributions with different scale parameters is quite complicated.The approximation by means of another gamma distribution is shown to be remarkably accurate for wide ranges of the parameter values, in particular if more than two variables are involved.
|Place of Publication||Tilburg|
|Number of pages||21|
|Publication status||Published - 2006|
|Name||CentER Discussion Paper|
- approximating distributions
- gamma distribution